On Tap Co Ban Vat Ly 9

7/31/2019 On Tap Co Ban Vat Ly 9

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Bui 1: I ph thuc U. in tr dy dn v I ph thuc R. nh lut m.Bui 2: Bi tp quan h U,I,R trn on mch ni tip.Bui 3: Bi tp quan h U,I,R trn on mch on mch song song v hn hp.Bui 4: Bi tp v cng thc tnh in tr dy dn Bin tr.Bui 5: Bi tp v bin tr trn mch ni tip, song song, hn hp.Bui 6: Bi tp v cng sut in.

Bui 7: Bi tp v cng sut in trn cc loi on mch (nng cao).Bui 8: Bi tp v cng ca dng in, in nng.Bui 9: Bi tp v cng ca dng in - nh lut Jun-LenxBui10: Bi tp an ton in, tng hp nng cao v mch in. Kim tra chng 1.Bui 11: Bi tp v nam chm, tc dng t, t trngBui 12: Bi tp v t ph, ng sc t, t trng ca ng dyBui 13: Bi tp s nhim t ca st v thp, nam chm in ng dng ca nam chm.Bui 14: Bi tp v lc in t, ng c in mt chiu, thc hnh.Bui 15: Bi tp n tng hp. Kim tra hc k 1.Bui 16: Bi tp phi hp quy tc nm tay phi v quy tc bn tay tri.

Bui 17: Bi tp hin tng cm ng in t, iu kin xut hin dng in cm ng.Bui 18: Bi tp v dng in xoay chiu, my pht in xoay chiu.Bui 19: Bi tp v cc tc dng ca dng xoay chiu, truyn ti in nng i xa.Bui 20: Bi tp v bin th, lp rp-vn hnh v phi hp vi gim hao ph dy ti.Bui 21: Bi tp n tng hp. Kim tra chng 2.Bui 22: Bi tp v hin tng khc x, quan h gia gc ti v gc khc x.Bui 23: Bi tp v thu knh hi t v nh ca vt to bi TKHT.Bui 24: Bi tp v thu knh hi t v nh ca vt to bi TKHT.Bui 25: Bi tp xc nh tiu c f ca TK hi t, v my nh, chiu phim.Bui 26: Bi tp v mt v tt ca mt

Bui 27: Bi tp v knh lp, ghp 2 TK, phi hp mt cn, vin v knh.Bui 28: Bi tp nh sng trng, mu, phn tch nh sng trng.Bu 29: Bi tp v trn mu nh sng, mu sc cc vt.Bui 30: Bi tp v cc tc dng ca nh sng, n. Kim tra chng 3.Bui 31: Bi tp nng lng, bo ton v chuyn ho nng lng.Bui 32: Bi tp v sn xut in nng, cc loi nh my in.Bui 33: Bi n tp tng hp. Kim tra hc k 2.

n tp c bn v nng cao vt l 9


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Ghi bngBui 1 (in tr-nh lut m)

1. in tr l g ? K hiu ? n v ? Cch xc nh ?

2. Pht biu v vit biu thc inh lut m ?

3. Cho th ph thuc I theo U trn mt vt dn (U=2V, I = 0,5A). Xc nh:

a. in tr vt dn. b. Cng I khi U = 5V. c. Hiu in th U khi I = 0,8A

4. Mt ampe k c gii hn o 1,5A, in tr 0,5.

a. Ampe k chu c hiu in th ln nht l bao nhiu ?b. Hiu in th gia hai u ampe k bng 0,2V th ampe k ch bao nhiu ?

c. Ampe k ch 0,8A th hiu in th gia hai u ampe k l bao nhiu ?

Ghi bngBui 2 (Quan h U,I,R trn on mch ni tip)

1. Pht biu, vit biu thc th hin c im in tr ca on mch mc ni tip ?

2. Mc thm vt dn ni tip vo on mch th in tr on mch thay i th no ? cng

dng in i qua on mch thay i th no ?3. a. Hai vt dn c in tr R1 v R2 c mc ni tip trn on mch ang c dng in. Bit R1 >

R2. So snh U1 vi U2 v pht biu khi qut ?

Cho R1nt R2 . Chng minh rng U1/U2 = R1/R2.

4. Cho on mch gm R1 nt R2 nt R3 . bit R1 = 3 , R2 = 4 , R3 = 5 v U = 18V. Tnh R ca on

mch ? Tnh I ? Tnh U2 gia hai u R2 ?

5. Cho R1 nt R2 ; U = 9V. a. Bit R1 = 4; U1 = 2V. Tnh R2 ?

b.Bit R1 = 4; U2 = 4V. Tnh R2 ? c. Bit R1 = 2R2. Tnh U1 ?6. Hai bng n in c ghi 110V-0,5A v 110V-0,4A mc ni tip vi nhau ri mc vo ngun

in 220V c c khng ?



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BUI 3: QUAN H U,I,R TRN ON MCH ON MCH SONG SONG V HNHP.1. Nu c im v cng thc tnh in tr ca on mch gm cc vt dn mc song song ?2. a.Cho R1//R2. Chng minh rng I1/I2 = R2/R1 b. Cho n in tr R0 mc song song vi nhau. Chng minh rng R = R0 /n3. a. Chng minh rng: in tr tng ng ca on mch song song nh thua in tr ca bt c

nhnh no trong on mch. b.Chng minh rng: Mc thm vt dn song song th in tr on mch gim.4. Cho on mch gm R1 // R2 // R3

a. Bit R1 = 60 R2 = 40 R3 = 20. Tnh in tr R ca c on mch ?

b. Bit R1 = R2 = R3 = 36. Tnh in tr R ca c on mch ?c. Bit R1 = 40, R2 = 80, R = 20. Tnh in tr R3 ?

5. Cho R1 // R2 ; Mch chnh c cng dng in I = 1,5Aa. Bit R1 = 5; I1 = 0,5A. Tnh R2 ?b. Bit R1 = 4; I2 = 0,5A. Tnh R2 ?

6. Cho (R1ntR2)//R3 .a. Bit R1=10, R2=8, R3=12, U=6V. Tnh R ? Tnh U2 ?b. Bit R1=8, R2=12, R3=10, I=1,5A. Tnh U ? Tnh I2 ?c. Bit R1=8, R2=12, R3=30, U1=4V. Tnh U2 ? Tnh I3 ?

7. Cho (R1//R2)ntR3 .a. Bit R1=40, R2=10, R3=12, U=6V. Tnh R ? Tnh I2 ?b. Bit R1=8, R2=12, R3=2,2, I=1,5A. Tnh U3 ? Tnh I2 ?c. Bit U=12V, U1=8V, R2=16, R3=4. Tnh I2 ? Tnh R1 ?

BUI 3: QUAN H U,I,R TRN ON MCH ON MCH SONG SONG V HNHP.1. Nu c im v cng thc tnh in tr ca on mch gm cc vt dn mc song song ?2. a.Cho R1//R2. Chng minh rng I1/I2 = R2/R1 b. Cho n in tr R0 mc song song vi nhau. Chng minh rng R = R0 /n3. a. Chng minh rng: in tr tng ng ca on mch song song nh thua in tr ca bt c

nhnh no trong on mch. b.Chng minh rng: Mc thm vt dn song song th in tr on mch gim.4. Cho on mch gm R1 // R2 // R3

d. Bit R1 = 60 R2 = 40 R3 = 20. Tnh in tr R ca c on mch ?e. Bit R1 = R2 = R3 = 36. Tnh in tr R ca c on mch ?f. Bit R1 = 40, R2 = 80, R = 20. Tnh in tr R3 ?

5. Cho R1 // R2 ; Mch chnh c cng dng in I = 1,5Ac. Bit R1 = 5; I1 = 0,5A. Tnh R2 ?



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d. Bit R1 = 4; I2 = 0,5A. Tnh R2 ?6. Cho (R1ntR2)//R3 .

d. Bit R1=10, R2=8, R3=12, U=6V. Tnh R ? Tnh U2 ?e. Bit R1=8, R2=12, R3=10, I=1,5A. Tnh U ? Tnh I2 ?f. Bit R1=8, R2=12, R3=30, U1=4V. Tnh U2 ? Tnh I3 ?

7. Cho (R1//R2)ntR3 .d. Bit R1=40, R2=10, R3=12, U=6V. Tnh R ? Tnh I2 ?e. Bit R1=8, R2=12, R3=2,2, I=1,5A. Tnh U3 ? Tnh I2 ?f. Bit U=12V, U1=8V, R2=16, R3=4. Tnh I2 ? Tnh R1 ?

BUI 4: BI TP V CNG THC TNH IN TR DY DN BIN TR.1. a. in tr ca dy dn kim loi ph thuc vo nhng yu t no ?b. Nu mi quan h ph thuc in tr ca dy dn kim loi vo nhng yu t .c. Vit cng thc din t quan h ph thuc in tr dy dn vo cc yu t ca dy v gii thch cc khiu trong cng thc ?d. V sao da vo biu thc R = U/I pht biu in tr ca vt dn t l thun vi hiu in th, t l

nghch vi cng dng in l sai ?2. a. ng c =1,7.10-8m. Tnh in tr R ca dy ng di 4000m, tit din 1mm2 ?b. Nu on di 50m th s c in tr Rbng bao nhiu ?c. Dy ng di 200m, nhng tit din 2mm2 th in tr R bng bao nhiu ?3. a. Tnh di ca dy ng c tit din 0,2mm2, in tr 1,7 ?

b. Cng loi dy , mun c in tr 3,4, th dy di l= ?4. a. Tnh tit din S ca dy ng c di 150m, in tr 1,7 ?

b. Cng di , dy ng c in tr 6,8, th tit din l S= ?5. in tr ca dy dn tng hay gim bao nhiu ln trong cc trng hp sau:a. Tng chiu di ln 6 ln ng thi gim tit din i 3 ln.

b. Tng chiu di ln 4 ln ng thi tng tit din ln 2 lnc. Gim chiu di i 3 ln ng thi tng tit din ln 6 lnd. Gim chiu di i 2 ln ng thi gim tit din i 2 ln6. a. Khi nhit tng, in tr ca dy dn kim loi thay i th no ?

b. C th lm thay i in tr ca dy dn kim loi bng nhng cch no ?7. a. Bin tr l g ? Gm c cc loi no ?b. V sao di chuyn con chy trn bin tr th cng dng in trong mch thay i ?8. a. S ghi 60-1,5A trn mt bin tr AB c ngha g ?

b. Mc bin tr vo mch in ti A v con chy C. t con chy C nm chnh gia bin tr th in trca bin tr l bao nhiu ?

c. Gi UAC khng i, dch con chy C v pha B th in tr ca bin tr thay i th no ? cng dng in qua bin tr thay i th no ? Khi no I ln nht ?

d. Gi UAC khng i bng 9V. khi chy dy bin tr ta ch c dch con chy C v pha B nu th phi dng ?

BUI 4: BI TP V CNG THC TNH IN TR DY DN BIN TR.1. a. in tr ca dy dn kim loi ph thuc vo nhng yu t no ?b. Nu mi quan h ph thuc in tr ca dy dn kim loi vo nhng yu t .



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c. Vit cng thc din t quan h ph thuc in tr dy dn vo cc yu t ca dy v gii thch cc khiu trong cng thc ?d. V sao da vo biu thc R = U/I pht biu in tr ca vt dn t l thun vi hiu in th, t lnghch vi cng dng in l sai ?

2. a. ng c =1,7.10-8m. Tnh in tr R ca dy ng di 4000m, tit din 1mm2 ?b. Nu on di 50m th s c in tr Rbng bao nhiu ?c. Dy ng di 200m, nhng tit din 2mm2 th in tr R bng bao nhiu ?

3. a. Tnh di ca dy ng c tit din 0,2mm2, in tr 1,7 ?b. Cng loi dy , mun c in tr 3,4, th dy di l= ?

4. a. Tnh tit din S ca dy ng c di 150m, in tr 1,7 ?b. Cng di , dy ng c in tr 6,8, th tit din l S= ?

5. in tr ca dy dn tng hay gim bao nhiu ln trong cc trng hp sau:a. Tng chiu di ln 6 ln ng thi gim tit din i 3 ln.

b. Tng chiu di ln 4 ln ng thi tng tit din ln 2 lnc. Gim chiu di i 3 ln ng thi tng tit din ln 6 lnd. Gim chiu di i 2 ln ng thi gim tit din i 2 ln6. a. Khi nhit tng, in tr ca dy dn kim loi thay i th no ?

b. C th lm thay i in tr ca dy dn kim loi bng nhng cch no ?7. a. Bin tr l g ? Gm c cc loi no ?b. V sao di chuyn con chy trn bin tr th cng dng in trong mch thay i ?8. a. S ghi 60-1,5A trn mt bin tr AB c ngha g ?

b. Mc bin tr vo mch in ti A v con chy C. t con chy C nm chnh gia bin tr th in trca bin tr l bao nhiu ?

c. Gi UAC khng i, dch con chy C v pha B th in tr ca bin tr thay i th no ? cng dng in qua bin tr thay i th no ? Khi no I ln nht ?

d. Gi UAC khng i bng 9V. khi chy dy bin tr ta ch c dch con chy C v pha B n

u th phi dng ?

BUI 5: Bi tp v bin tr trn mch ni tip, song song, hn hp.



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1. Dng dy dn bng ng (1,7.10-8m) tit din 0,2mm2 di 200m mc mt bng n in c intr R1 vo ngun in c hiu in th 220V th hiu in th gia hai u n l 205V. V s mchin. Tnh in tr mch in ? Tnh R1 ca n ?2. Mc bng n c in tr R1 = 30 ni vi con chy C ca bin tr AB ri mc u A vo cc (+),u kia ca n vo cc (-) ca ngun in c U = 9V khng i. Trn bin tr c ghi 60-2A. V s mch in. Tnh hiu in th gia hai u n khi C chnh gia bin tr ? Di chuyn con chy v phano th cng dng in trong mch gim ? Tnh hiu in th b nht gia hai u n ?

3. Cho on mch in c s nh bn. CBit R1=24, R2=12. Bin tr ghi 48-2A. A B R2

Ngun c U=12V khng i.a. Xc nh R v I khi C chnh gia AB ? R1

b. Tnh cng dng in mch chnh b nht Imin khi di chuyn C trn AB ?c. Dch con chy C n u th I1 = 0,25A ?

BUI 5: Bi tp v bin tr trn mch ni tip, song song, hn hp.1. Dng dy dn bng ng (1,7.10-8m) tit din 0,2mm2 di 200m mc mt bng n in c intr R1 vo ngun in c hiu in th 220V th hiu in th gia hai u n l 205V. V s mchin. Tnh in tr mch in ? Tnh R1 ca n ?2. Mc bng n c in tr R1 = 30 ni vi con chy C ca bin tr AB ri mc u A vo cc (+),u kia ca n vo cc (-) ca ngun in c U = 9V khng i. Trn bin tr c ghi 60-2A. V s mch in. Tnh hiu in th gia hai u n khi C chnh gia bin tr ? Di chuyn con chy v phano th cng dng in trong mch gim ? Tnh hiu in th b nht gia hai u n ?3. Cho on mch in c s nh bn. CBit R1=24, R2=12. Bin tr ghi 48-2A. A B R2

Ngun c U=12V khng i.a. Xc nh R v I khi C chnh gia AB ? R1b. Tnh cng dng in mch chnh b nht Imin khi di chuyn C trn AB ?c. Dch con chy C n u th I1 = 0,25A ?

BUI 5: Bi tp v bin tr trn mch ni tip, song song, hn hp.1. Dng dy dn bng ng (1,7.10-8m) tit din 0,2mm2 di 200m mc mt bng n in c intr R1 vo ngun in c hiu in th 220V th hiu in th gia hai u n l 205V. V s mch

in. Tnh in tr mch in ? Tnh R1 ca n ?2. Mc bng n c in tr R1 = 30 ni vi con chy C ca bin tr AB ri mc u A vo cc (+),u kia ca n vo cc (-) ca ngun in c U = 9V khng i. Trn bin tr c ghi 60-2A. V s mch in. Tnh hiu in th gia hai u n khi C chnh gia bin tr ? Di chuyn con chy v phano th cng dng in trong mch gim ? Tnh hiu in th b nht gia hai u n ?3. Cho on mch in c s nh bn. CBit R1=24, R2=12. Bin tr ghi 48-2A. A B R2

Ngun c U=12V khng i.a. Xc nh R v I khi C chnh gia AB ? R1

b. Tnh cng dng in mch chnh b nht Imin khi di chuyn C trn AB ?

c. Dch con chy C n u th I1 = 0,25A ?

BUI 6: Bi tp v cng sut in.



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1. Vit biu thc cng sut ca dng in v gii thch cc k hiu trong cng thc ? Din t cng thcthnh li vn. Kt hp nh lut m hy chuyn cng thc cng sut dng in nu thnh 2 biu thcc i lng in tr !2.Nu cc bc xc nh cng sut ca mt on mch bng ampe k v vn k ?3.Nu ngha cc s ghi thng gp trn mt bng n in ?4. a. Cho U = 9V, I = 1,5A. Tnh P ? b. Cho I = 0,5A, P = 66W. Tnh U ?c. Cho s ghi 110V-55 W. Tnh Im ? d. Cho R =18, I = 0,25A. Tnh P ?

e. Cho R = 9, U = 9V. Tnh P ? g.Cho I = 0,1A, P = 16W. Tnh R ?h. Cho U = 9V, P = 36W. Tnh R ? i. Bit P = 81W, R = 9. Tnh U ?k. Bit P = 36W, R = 4. Tnh I ?5. Mt bng n khi mc vo hiu in th 6V th c cng sut tiu th l 3W.a. Tnh in tr ca bng n ?

b. Trn bng n c ghi 12V - W. in tr bng n khng i. Tm s ghi cn thiu ?c. Khi cng dng in qua n bng 0,9A th n sng th no ?d. Xc nh hiu in th gia hai u n khi cng sut tiu th trn n bng 0,75 W ?

BUI 6: Bi tp v cng sut in.1. Vit biu thc cng sut ca dng in v gii thch cc k hiu trong cng thc ? Din t cng thcthnh li vn. Kt hp nh lut m hy chuyn cng thc cng sut dng in nu thnh 2 biu thcc i lng in tr !2.Nu cc bc xc nh cng sut ca mt on mch bng ampe k v vn k ?3.Nu ngha cc s ghi thng gp trn mt bng n in ?4. a. Cho U = 9V, I = 1,5A. Tnh P ? b. Cho I = 0,5A, P = 66W. Tnh U ?c. Cho s ghi 110V-55 W. Tnh Im ? d. Cho R =18, I = 0,25A. Tnh P ?e. Cho R = 9, U = 9V. Tnh P ? g.Cho I = 0,1A, P = 16W. Tnh R ?

h. Cho U = 9V, P = 36W. Tnh R ? i. Bit P = 81W, R = 9. Tnh U ?k. Bit P = 36W, R = 4. Tnh I ?5. Mt bng n khi mc vo hiu in th 6V th c cng sut tiu th l 3W.a. Tnh in tr ca bng n ?

b. Trn bng n c ghi 12V - W. in tr bng n khng i. Tm s ghi cn thiu ?c. Khi cng dng in qua n bng 0,9A th n sng th no ?d. Xc nh hiu in th gia hai u n khi cng sut tiu th trn n bng 0,75 W ?

BUI 6: Bi tp v cng sut in.1. Vit biu thc cng sut ca dng in v gii thch cc k hiu trong cng thc ? Din t cng thcthnh li vn. Kt hp nh lut m hy chuyn cng thc cng sut dng in nu thnh 2 biu thcc i lng in tr !2.Nu cc bc xc nh cng sut ca mt on mch bng ampe k v vn k ?3.Nu ngha cc s ghi thng gp trn mt bng n in ?4. a. Cho U = 9V, I = 1,5A. Tnh P ? b. Cho I = 0,5A, P = 66W. Tnh U ?c. Cho s ghi 110V-55 W. Tnh Im ? d. Cho R =18, I = 0,25A. Tnh P ?e. Cho R = 9, U = 9V. Tnh P ? g.Cho I = 0,1A, P = 16W. Tnh R ?h. Cho U = 9V, P = 36W. Tnh R ? i. Bit P = 81W, R = 9. Tnh U ?

k. Bit P = 36W, R = 4. Tnh I ?5. Mt bng n khi mc vo hiu in th 6V th c cng sut tiu th l 3W.a. Tnh in tr ca bng n ?

b. Trn bng n c ghi 12V - W. in tr bng n khng i. Tm s ghi cn thiu ?c. Khi cng dng in qua n bng 0,9A th n sng th no ?



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d. Xc nh hiu in th gia hai u n khi cng sut tiu th trn n bng 0,75 W ?

BUI 7: Bi tp v cng sut in trn cc loi on mch (nng cao).

1. Mc R1ntR2. a. CMR P1 : P2 = R1 : R2 b.Bit R1 = 12, R2 = 24, U = 12V. Tnh P ? Tnh P1 ?

c. Bit R1 = 8, R2 = 12, P1 = 2 W. Tnh P2 ? Tnh P ?

d*. Bit R2 = 3R1 = 24, P = 24W . Tnh P1 ? Tnh U ?

2. Mc R1//R2. a. CMR P1 : P2 = R2 : R1 .b. Bit R1 = 12, R2 = 36, U = 6V. Tnh P ?

c. Bit R1 = 8, R2 = 12, P1 = 0,72 W. Tnh P2 ? Tnh P ?

d*. Bit R2 = 3R1 = 24, P = 6W . Tnh P1 ? Tnh U ?

3. Cho 1 (6V-3W) v 2 (9V - 9W). Tnh cng sut ln nht ca b n khi:a. Mc 1 ni tip 2 .

b. Mc 1 song song 2.

4. Cho on mch in gm R1nt(R2//R3)a. Bit R1 = 7,2, R2 = 12, R3 = 8, U = 9V. Tnh P1 ? Tnh P2 ? Tnh P ?

b*. Bit R1 = R2 = 3R3 , P = 7,5W. Tnh P1 ? P2 ?

5.* Mc mt bng n c in tr R1 ni tip vi mt bin tr c ghi 18 - 2A ri mc vo ngun c U= 12V khng i. Khi con chy v tr dng in i qua 1/3 bin tr th n sng bnh thng.a. Tnh in tr ca n v cc gi tr nh mc ghi trn n ?



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b.Tnh cng sut tiu th b nht trn n khi di chuyn con chy trn bin tr ? c.Tm in tr bin trm cng sut trn n l P1 = 3,84 W ?d. Tm v tr con chy m cng sut tiu th trn bin tr l P2 = 4,5 W ?

BUI 8 -Bi tp v in nng - Cng ca dng in.1. Nhng du hiu no chng t dng in c nng lng ?2. in nng c th chuyn ho thnh nhng dng nng lng no ? V d minh ho ?3. Dng c o in nng tiu th l g ? n v o in nng ? i ra n v Jun ?

4. Cng ca dng in l g ? Nu cc biu thc tnh cng ca dng in ?5. Tnh cng ca dng in trong cc trng hp:a. n c ghi 220V-100W sng bnh thng trong 5h ?

b. on mch in mc vo ngun 12V th c dng in 0,5A i qua trong 12ph ?c. Mc dy dn c in tr 30 vo ngun c hiu in th 6V trong 15ph ?d. Dng in 1,5A i qua on mch c in tr 20 trong 1h ?6. a. in nng tiu th trong 15ph l 0,36KWh. Tnh cng sut tiu th ?

b. Tnh thi gian n 220V-60W sng bnh thng tiu th in nng 0,72KWh ?c. Tnh hiu in th gia hai u on mch bit dng in i qua l 1,2A v trong 2h tiu tn innng 0,56kWh ?

d. Bit cng ca dng in sinh ra trong 10ph l 18000J v hiu in th gia hai u on mch l 6V.Tnh in tr ca on mch ?e. Mc in tr 30 vo ngun 12V sau bao lu th tiu tn in nng 2400J ?7. Mc R1//R2. a. CMR A1 : A2 = R2 : R1

b.Bit R1 = 12, R2 = 24, U = 12V. Tnh A ? Tnh A1 ?c. Bit R1 = 8, R2 = 12, A1 = 24J. Tnh A2 ? Tnh A ?d*. Bit R2 = 3R1 = 24, A = 48J . Tnh A1 ? Tnh U ?

T TM CU TR LI, CCH GII THY S GII PBUI 8 -Bi tp v in nng - Cng ca dng in.

1. Nhng du hiu no chng t dng in c nng lng ?2. in nng c th chuyn ho thnh nhng dng nng lng no ? V d minh ho ?3. Dng c o in nng tiu th l g ? n v o in nng ? i ra n v Jun ?4. Cng ca dng in l g ? Nu cc biu thc tnh cng ca dng in ?

5. Tnh cng ca dng in trong cc trng hp:a. n c ghi 220V-100W sng bnh thng trong 5h ?b. on mch in mc vo ngun 12V th c dng in 0,5A i qua trong 12ph ?c. Mc dy dn c in tr 30 vo ngun c hiu in th 6V trong 15ph ?d. Dng in 1,5A i qua on mch c in tr 20 trong 1h ?6. a. in nng tiu th trong 15ph l 0,36KWh. Tnh cng sut tiu th ?

b. Tnh thi gian n 220V-60W sng bnh thng tiu th in nng 0,72KWh ?c. Tnh hiu in th gia hai u on mch bit dng in i qua l 1,2A v trong 2h tiu tn innng 0,56kWh ?d. Bit cng ca dng in sinh ra trong 10ph l 18000J v hiu in th gia hai u on mch l 6V.

Tnh in tr ca on mch ?e. Mc in tr 30 vo ngun 12V sau bao lu th tiu tn in nng 2400J ?7. Mc R1//R2. a. CMR A1 : A2 = R2 : R1

b.Bit R1 = 12, R2 = 24, U = 12V. Tnh A ? Tnh A1 ?c. Bit R1 = 8, R2 = 12, A1 = 24J. Tnh A2 ? Tnh A ?



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d*. Bit R2 = 3R1 = 24, A = 48J . Tnh A1 ? Tnh U ?

BUI 8 -Bi tp v in nng - Cng ca dng in.1. Nhng du hiu no chng t dng in c nng lng ?....................................................................................................................................................................................................................................................................................

2. in nng c th chuyn ho thnh nhng dng nng lng sau: ......................................................................................................................................................................

Trn vt tiu th in nng s chuyn ho sang cc dng nng lngBn l, bp inn non, n si tcQut in, m t

3. Dng c o in nng tiu th l g ? n v o in nng ? i ra n v Jun ?..................................................................................................................................................................................................................................................................................

4. Cng ca dng in l g ? Nu cc biu thc tnh cng ca dng in ?....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................5. Tnh cng ca dng in trong cc trng hp:a. n c ghi 220V-100W sng bnh thng trong 5h ?.........................................................................................................................................

b. on mch in mc vo ngun 12V th c dng in 0,5A i qua trong 12ph ?.........................................................................................................................................c. Mc dy dn c in tr 30 vo ngun c hiu in th 6V trong 15ph ?.........................................................................................................................................d. Dng in 1,5A i qua on mch c in tr 20 trong 1h ?.........................................................................................................................................e. on mch gm 20 bng 220V-25W tt c sng bnh thng trong 1 ngy ?.........................................................................................................................................6. a. in nng tiu th trong 15ph l 0,36KWh. Tnh cng sut tiu th ?..................................................................................................................................................................................................................................................................................

b. Tnh thi gian n 220V-60W sng bnh thng tiu th in nng 0,72KWh ?.........................................................................................................................................c. Tnh hiu in th gia hai u on mch bit dng in i qua l 1,2A v trong 2h tiu tn innng 0,56kWh ?.........................................................................................................................................d. Bit cng ca dng in sinh ra trn on mch trong 10ph l 18000J v hiu in th gia hai uon mch l 6V. Tnh in tr ca on mch ?.........................................................................................................................................e. Mc in tr 30 vo ngun 12V sau bao lu th tiu tn in nng 2400J ?

.........................................................................................................................................7. Mc R1//R2. a. CMR A1 : A2 = R2 : R1

.........................................................................................................................................b.Bit R1 = 12, R2 = 24, U = 12V v t = 12s. Tnh A ? Tnh A1 ?.........................................................................................................................................



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c. Bit R1 = 8, R2 = 12, A1 = 24J. Tnh A2 ? Tnh A ?.........................................................................................................................................d*. Bit R2 = 3R1 = 24, A = 48J . Tnh A1 ? Bit t = 2s. Tnh U ?..................................................................................................................................................................................................................................................................................

BUI 9 -Bi tp v cng ca dng in-nh lut Jun-Lenx.1. Mc R1ntR2. a. CMR A1 : A2 = R1 : R2

.......................................................................................................................................b.Bit R1 = 12, R2 = 24, U = 12V, t = 10s. Tnh A ? Tnh A1 ?

c. Bit R1 = 8, R2 = 12, A1 = 200J. Tnh A2 ? Tnh A ?

d*. Bit R2 = 3R1 = 24, A = 400J . Tnh A1 ? Bit t = 10s. Tnh U ?

2. Cho on mch in gm R1nt(R2//R3)a. Bit R1 = 7,2, R2 = 12, R3 = 8, U = 9V, t = 5s. Tnh A1 ? Tnh A2 ? Tnh A ?

b*. Bit R1 = R2 = 3R3 , A = 750J. Tnh A1 ? Tnh A2 ?

3. Cho on mch in gm R1//(R2ntR3)a. Bit R1 = 24, R2 = 12, R3 = 36, U = 9V, t = 5s. Tnh A1 ? Tnh A2 ? Tnh A ?

b*. Bit R1 = R2 = 2R3 , P = 750J. Tnh A1 ? A2 ?

4. Vit biu thc v pht biu nh lut Jun-Len x ?

5. a. Tnh nhit lng to ra trn dy dn 20 c dng in 0,5A trong 5ph ?.........................................................................................................................................

b. Tnh cng dng in qua dy dn 25 bit nhit lng to ra trong 2ph l 1kJ ?



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.........................................................................................................................................c. Sau bao lu th dng in 2A i qua in tr 40 s to nhit lng 2kJ ?.........................................................................................................................................d. Tnh in tr dy dn m dng in 0,5A qua trong 10ph th to nhit 2kJ ?.........................................................................................................................................6. Ti sao cng cng dng in i qua n th nng sng m dy dn th khng nng ?

BUI 10 -Bi tp v an ton, tit kim in, tng hp nng cao v mch in.1. Hiu in th an ton cho ngi l ................. Thit b bo v mch in l ....................

Th t mc ng ca mch in gm n, kho in, cu ch l: dy nng, .................................................................... dy ngui. an ton cho ngi khi tip xc vi in cn

phi ..........................................................................................................................................2. Cc bin php tit kim in trong gia nh gm c: ..........................................................

...................................................................................................................................................

...................................................................................................................................................3. Ba in tr c cng gi tr 6. Mc chng th no c in tr tng ng bng 4?

A. C ba in tr mc song song. B. c ba in tr mc ni tip.C. Hai in tr ni tip nhau, c hai cng song song vi in tr th ba.D. Hai in tr song song nhau, c hai cng ni tip vi in tr th ba.

4. Ba on dy ng, nhm, st c cng chiu di, cng tit din c mc ni tip vi nhau ri mc vo ngunin. Sau cng thi gian nh nhau, nhit lng to ra trn on no ln nht ?

5. Mc song song hai on dy dn ch to bi cng mt kim loi ri mc vo mch in. Bit rng l 2 = 2l1 vS1 = 3S2. Tnh t s cng sut in trn hai on dy ?

6. Mc dy dn bng ng (in tr sut 1,7.10-8

m) tit din 0,17mm2

thp sng cm 2 bng n 1//2 cch cm in c U = 220V mt khong 50m. Bit R1 = 350 , R2 = 250 . Tnh cng ca dng in sinh ra trn n 1 sau1ph ? Tnh in nng hao ph trn dy dn sau 1h ?

7. Mc ni tip bin tr c ghi 36 - 1,5A vi bng n c ghi 6V-3W ri mc vo ngun c hiu in th 9V.iu chnh bin tr n sng bnh thng. Tnh hiu sut mch in ?



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8. Hai bng n 1(220V-25W) v 2(220V-75W) c mc ni tip vo mng in. Tnh t s cng sut tonhit trn hai n ?

BUI 11: Bi tp v nam chm, tc dng t, t trng.

1. a. Nam chm c nhng tnh cht c bit no ? .................................................................................................................................................................................................

b. Nhn bit nam chm bng nhng cch no ? ......................................................................................................................................................................................................

c. Nam chm ht nhng cht no ? khng ht nhng cht no ? ............................................................................................................................................................................d. S ht ca nam chm c g khc so vi s ht ca vt nhim in ? ..................................................................................................................................................................e. Mt nam chm c my cc ? Tn gi ca cc cc ? ............................................................................................................................................................................................g. Trn nam chm thng cc t thng nm u ? ......................................................h. Trn nam chm ch U cc t thng nm u ? ...............................................................................................................................................................................................

i. V tr no trn nam chm ht mnh nht ? v tr no ht yu nht ? ....................................................................................................................................................................k. Quy c nh th no l cc Bc ca nam chm ? Cc Bc thng sn mu g ? K hiu chg ? ............................................................................................................................................................................................................................................................l. Nhn bit cc Nam ca nam chm bng nhng cch no ? Cch no lun ng ? ..............................................................................................................................................m. Nam chm mt mu sn hoc nghi ng sn sai mu th kim tra bng cch no ?.........................................................................................................................................2. a. Cc cc ca hai nam chm tng tc vi nhau theo quy lut th no ? ...........................................................................................................................................................

b. 2 nam chm thng t do nm song song gn nhau chng s nm th no ? ..................................................................................................................................................c. Th hai cc ca 2 nam chm thy chng ht nhau th kt lun g v hai cc ?.........................................................................................................................................d. Th hai cc ca 2 nam chm thy chng y nhau th kt lun g v hai cc ?.........................................................................................................................................e. Th 2 thanh kim loi thy chng ht nhau c phi l 2 thanh nam chm khng ? Vsao ? ............................................................................................................................g. Th 2 thanh kim loi thy chng y nhau c phi l 2 thanh nam chm khng ? Vsao ? ............................................................................................................................h. Hai thanh kim loi ht nhau, tr u ca 1 trong 2 thanh m chng vn ht nhau th c phi l 2 thanhnam chm khng ? V sao ? ...............................................................



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..........................................................................................................................................i. Nu cch dng 1 nam chm phn bit 1 thanh st v 1 thanh nam chm ? .......................................................................................................................................................k. Nu cch dng 1 thanh st phn bit 1 thanh st v 1 thanh nam chm ? ........................................................................................................................................................l. Ch c 1 thanh st v 1 thanh nam chm. Lm cch no phn bit chng ? ......................................................................................................................................................3. a. Tc dng t l g ? .............................................................................................................................................................................................................................................

b. Tc dng t v tc dng in khc nhau th no ? ................................................................................................................................................................................................

c. Trng hp no th c c tc dng in v tc dng t ? .....................................................................................................................................................................................d. Nhng vt no to ra c tc dng t ? ...............................................................................................................................................................................................................e. t kim nam chm nm th no th s khng pht hin c dng in c tc dngt ? .............................................................................................................................................................................................................................................................................g. Hin tng 1 thanh st ht 1 thanh st c chc lc ht l tc dng t khng ? Lm thm ng tc gth khng nh c l tc dng t hay khng phi l tc dngt ? ..............................................................................................................................................................................................................................................................................................................................................................................................................4. a. Khu vc c tnh cht th no th gi l khu vc c t trng ? ..................................................................................................................................................................................................................................................................................................................

b. Nhn bit khu vc c t trng bng cch no ? ...................................................................................................................................................................................................c. t mt kim nam chm t do vo khu vc thy kim nm yn theo mt phng xc nh. Quay kimnam chm i 1800 li thy kim nm yn. c phi l khu vc c t trng hay khng ? Vsao ?..............................................................................................................................................................................................................................................................................................................................................................................d. Ti sao ni xung quanh Tri t c t trng ? ..................................................................................................................................................................................................e. Trn bn lm vic t 1 kim nam chm t do, th i th li thy kim nam chm c nm theo mthng xc nh khc hng Bc-Nam th ta c kt lun g v khu vcny ? ..........................................................................................................................................................................................................................................................................g. T trng c nhng u ? .................................................................................................................................................................................................................................h. mt kim nam chm bn cnh dy dn c dng in m kim nam chm vn nm hng Bc-Nam

m ni rng dy dn khng c dng in th c chc l ng khng ?..................................................................................................................................................................................................................................................................................i. Xung quanh nam chm thng t trng mnh nht l u ? yu nht l u ?



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.........................................................................................................................................

.........................................................................................................................................k. Xung quanh nam chm ch U t trng mnh nht l u ? yu nht l u ?..................................................................................................................................................................................................................................................................................l. Xung quanh dy dn c dng in t trng mnh u ? yu u ? .......................................................................................................................................................................................................................................................................................................

BUI 12: Bi tp v t ph, ng sc t, t trng ca ng dy

1. T ph l g ? .........................................................................................................................................................................................................................................................2. ng sc t l g ? ..............................................................................................................................................................................................................................................3. dy tha ca ng sc t ni t trng mnh khc ni t trng yu th no ? ...........................................................................................................................................4. Chiu quy c ca ng sc t ? .........................................................................................................................................................................................................................5. Kim nam chm nm th no trn ng sc t ? .......................................................

..........................................................................................................................................6. ng sc t ca nam chm c chiu ........................................................................

..........................................................................................................................................7. V h thng ng sc t ca nam chm thng, nam chm ch U v nh du chiu

8. Cho h thng ng sc t nh hnh 9. Cho kim nam chm cn bng ti ccv. Hy v kim nam chm nm cn b v tr nh hnh v. Hy th v h thngti cc im A, B, C. So snh mnh ng sc t , ch ra khu vc t trngca t trng ti 3 im ? mnh, khu vc t trng yu ?



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10. V h thng ng sc t ca Tri t, 11. V h thng ng sc t ca mtxc nh chiu, suy ra cc t Tri t. ng dy dn c dng in di y.

12. Chiu ng sc t ca ng dy dn c dng in c xc nh theo quy tc ....................................................... Ni dung quy tcl:................................................... ............................................................................................................................................................................................................................................................................................................................................................................................................................13. Dng quy tc nu xc nh v nh du chiu ng sc t v trong cu 11.14. Cho ng dy c dng in nh hnh v. V mt s ng sc t v v kim nam chm nm cn bngti cc im ghi trn hnh v.

15. Bit kim nam chm nm cnh ng dy dn c dng in nh hnh v. V ng sc t, nh duchiu. T xc nh chiu ca dng in trong ng dy dn.



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16. Hai ng dy dn trng thi t do, c dng in nm gn nhau n nh. Hy xc nh cc t cang dy th nht, cc t ca ng dy th hai. T xc nh chiu ca dng in trong ng dy thhai. .

BUI 13: Bi tp s nhim t ca st v thp, nam chm in ng dng.

1. Vt liu st t bao gm: .......................................................................................................2. a. c im s nhim t ca st non l ................................................................................

b. c im s nhim t ca thp l ...................................................................................

3. Cu to ca nam chm in gm ........................................................................................................................................................................................................................................Tc dng ca li st l ..........................................................................................................

4. Li ca nam chm in phi l .......................... khi ngt dng in th ........................5. C hai cch lm cho lc t ca nam chm in mnh ln l: ...........................................

.................................................................................................................................................6. So vi nam chm vnh cu th nam chm in c 3 u im l: ............................................

..................................................................................................................................................

..................................................................................................................................................7. a mt u ng dy dn c dng in li gn mt nhm inh ghim (hoc mt st) th

chng s b ................................. bin thnh ........................................., chng s .................................... kt vi nhau thnh chm u ng dy.8. Vi mt dng in nh ta vn c th to c mt nam chm in mnh bng cch:

A. Tng chiu di li st. B. Gim chiu di li st.C. Tng s vng dy dn. D. Gim s vng dy dn.

9. Vt liu ch to nam chm vnh cu l ..................... .....................................................10. To nam chm vnh cu bng cch ......................................................................................

................................................................................................................................................To mt kim nam chm bng cch .......................................................................................

11. Bo qun nam chm vnh cu lu mt t tnh bng cch:

......................................................................................................................................................................................Th hin trong hnh v bn.

12. Xc nh cc ca nam chm vnh cu trong cc hnh v sau y



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13. Gch chn nhng vt dng hot ng chnh da vo ng dng ca nam chm:chung in, bn l, bp in, ng nghe in thoi, r le in t, ni cm in, loa in,n in dy tc, cn cu in, n neon, la bn, qut in.

14. R le in t ngt c mch in khi dng in qu ln l v ......................................................................................................................................................................................................................................................................................................................................

15. ng nghe in thoi pht ra c m l nh .....................................................................................................................................................................................................................ng nghe in thoi pht ra c m lc to, lc nh l nh ..............................................................................................................................................................................................

...............................................................................................................................................16. Cn cu in hot ng nh sau: bc hng, cn cu a nam chm in t ln v

thng hng bng st v ....................................... thng hng s b ..................................... th thng hng xung, th my phi ............................................., khi nam chmin .........................................., thng hng s ....................................................................

17. Cu no ng ? Cu no sai ?A. Tt c cc vt liu kim loi u nhim t, tr ng, nhm v bc.B. Sau khi nhim t, st non gi c t tnh lu di, cn thp th mt t tnh nhanh.C. Bin mt mnh thp hnh thoi thnh kim nam chm bng cch t vo u nam chm.D. gi t tnh ca nam chm c lu ta nung nam chm trn la.

E. Tt c cc thit b dng in u l ng dng ca s nhim t.BUI 14: Bi tp v lc in t - ng c in mt chiu.

1. T trng tc dng ln dy dn c dng in khi ...................................................................................................................................................................................................................

2. Cu no ng ? Cu no khng ng ?A. Dy dn c dng in t vung gc vi ng sc t th s b t trng tc dng lc.B. Dy dn c dng in t trong t trng th no cng b t trng tc dng lc.C. Dy dn t khng song song vi ng sc t trng th s b tc dng lc t.

3. Chiu ca lc t tc dng ln dy dn c dng in tun theo quy tc ..................................Quy tc c pht biu nh sau: ............................................................................................

...................................................................................................................................................

...................................................................................................................................................4. Xc nh v v k hiu lc t trong cc hnh v sau:

5. Xc nh v k hiu chiu dng in trn dy dn trong cc hnh v sau:



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6. V ng sc, xc nh cc ca nam chm trong cc hnh v sau:

7. Khung dy c dng in t trong t trng quay c l do ............................................

Khung dy chu tc dng quay mnh nht khi mt phng khung ....................................................................................................................., khng cn tc dng quay khi mt phng

khung ......................................................................................................................................8. Cc b phn chnh ca ng c in mt chiu l ..................................................................

..................................................................................................................................................Tc dng ca hai bn khuyn v thanh qut l .........................................................................................................................................................................................................................

9. S chuyn ho nng lng trong ng c in mt chiu l ..................................................................................................................................................................................................

10. Gch chn cc dng c trong c ng c in: qut bn, ti vi, t lnh, ni cm in, my sy tc,

my bm nc chy in, my mi, my xay sinh t, bn l.11. ng c in mt chiu hn ng c nhit cc im sau y:

- ..............................................................................................................................................- ..............................................................................................................................................- ...............................................................................................................................................- ...............................................................................................................................................

BUI 15: Bi tp n tng hp. Kim tra hc k 1 (2 ca B GD&T).

BUI 16: Bi tp hin tng cm ng in t, iu kin xut hin dng in cm ng.1. Nhng trng hp no trong cc trng hp sau y l dng in cm ng ?

a. Dng in do pin sinh ra khi bt sng n pin .b. Dng in sinh ra trong mt cun dy dn kn khi ta a nam chm vo cun dy.c. Dng in do c quy sinh ra khi ta lp c quy cho qut quay.d. Dng in sinh ra trong cun dy dn kn th hai khi ta b thm li st vo cun dy dn kn th nht c mc sn vo cquy.e. Dng in sinh ra trong cun dy dn kn th hai khi ta thay i s vng dy ca cun dy dn thnht ang c dng in.g. Dng in sinh ra khi ta quay cun dy dn kn trc mt u nam chm vnh cu.h. Dng in sinh ra khi trong cun dy dn kn th hai khi ta tng gim cng dng in trong cundy dn kn th nht.

i. Dng in sinh hot thng dng trong gia nh.2. Dng in cm ng l g ? ..............................................................................................................................................................................................................................................................................................................................................................................3. iu kin xut hin dng in cm ng trong mt cun dy dn kn ?



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..........................................................................................................................................

..........................................................................................................................................4. Dng in cm ng xut hin trong mch kn trong khong thi gian no ?....................................................................................................................................................................................................................................................................................5. Ch ra s thay i s ng sc t trng xuyn qua mch in kn trong mi trng hp c xut hindng in cm ng sau y (s ng sc t tng hay gim):

a. a mt u nam chm vnh cu li gn mt u ng dy dn kn.b. a mt u nam chm vnh cu ra xa mt u ng dy dn kn.c. a mt u nam chm vnh cu qua li trc mt u ng dy dn kn.d. Xoay mt vng dy dn kn t v tr mt phng vng dy vung gc vi cc ng sc sang v trsong song cc ng sc t trng.e. Xoay mt vng dy dn kn t v tr mt phng vng dy song song vi cc ng sc sang v trnghing vi cc ng sc t trng.g. Ni cun dy dn th nht vi b pin th trong cun dy dn kn th hai bn cnh xut hin dngin cm ng.h. Tho cun dy dn th nht khi b pin th trong cun dy dn kn th hai bn cnh xut hin dng

in cm ng.i. Di chuyn con chy ca bin tr trong mch c cquy ni tip vi cun dy dn th nht th trongcun dy dn kn th hai bn cnh xut hin dng in cm ng.k. B thm li st vo cun dy dn th nht ni kn vi cquy th trong cun dy dn kn th hai

bn cnh xut hin dng in cm ng.l. Cm cun dy dn th nht c dng in ko ra xa cun dy dn kn th hai th trong cun dy dn knth hai c dng in cm ng.m. Di chuyn con chy lm gim s vng dy ca cun dy dn th nht ang mc vo cquy thtrong cun dy dn kn th hai xut hin dng in.n. Dng thanh st non khp kn mch t ca mt nam chm mng nga th trong cun dy dn kn

cun quanh nam chm xut hin dng in cm ng.6. Xc nh cu ng, cu sai:a. Dng in cm ng xut hin khi t trng xuyn qua mch in kn mnh.

b. Dng in cm ng xut hin khi s ng sc xuyn qua mch in kn tng.c. Dng in cm ng xut hin khi s ng sc xuyn qua mch in kn t.d. Dng in cm ng xut hin khi t trng xuyn qua mch in kn yu i.e. Dng in cm ng xut hin khi s ng sc xuyn qua mch in kn thay ig. Dng in cm ng xut hin khi t trng xuyn qua mch in kn khng i.

BUI 18: Bi tp v dng in xoay chiu, my pht in xoay chiu.

1. Dng in xoay chiu l dng in nh th no ? .........................................................................................................................................................................................................................2. ng sc t xuyn qua mch kn bin i th no th to ra dng in xoay chiu ?........................................................................................................................................................3. Dng in i chiu vo thi im .........................................................................................hoc ..............................................................................................................................................4. Ba cch to ra s lun phin tng gim s ng sc t xuyn qua mt cun dy dn kn:- Di chuyn cun dy qua li lin tc gia vng ................... mnh v vng .............. yu.- Quay cun dy lin tc trong t trng thay i gc gia .................................. v ng sc- Dng dng in c cng ................................................................. to ra t trng xuyn qua cun dy

dn tng-gim lin tc.5. Trong cc trng hp xut hin dng in cm ng cun dy dn kn sau y trng hp no l dng inxoay chiu ?a. a mt u nam chm vnh cu li gn mt u ng dy dn kn.

b. a mt u nam chm vnh cu vo ra lin tc mt u ng dy dn kn.



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c. Mt u nam chm vnh cu treo di mt si dy dao ng qua li trc mt u ng dy dn kn.d. Xoay mt vng dy dn kn lin tc t v tr mt phng vng dy vung gc vi cc ng sc sang vtr song song cc ng sc t trng v ngc li.e. Xoay mt vng dy dn kn t v tr mt phng vng dy song song vi cc ng sc sang v trnghing vi cc ng sc t trng.f. Cm mt on ca vng dy dn kn di chuyn qua li ct cc ng sc t trong lng mt nam chmch U th trong vng dy xut hin dng in cm ng.

g. Ni cun dy dn th nht vi b pin th trong cun dy dn kn th hai bn cnh xut hin dngin cm ng.h. ng ngt lin tc kho in ni cun dy dn th nht vi b pin th trong cun dy dn kn th hai bn cnh xut hin dng in cm ng.i. Di chuyn qua li con chy trn bin tr trong mch c cquy ni tip vi cun dy dn th nht thtrong cun dy dn kn th hai bn cnh xut hin dng in.k. Di chuyn mt li st vo, ra lin tc cun dy dn th nht ni kn vi cquy th trong cun dydn kn th hai bn cnh xut hin dng in cm ng.l. Cm cun dy dn th nht c dng in ko ra xa cun dy dn kn th hai th trong cun dy dn knth hai c dng in cm ng.

m. Di chuyn con chy lm gim s vng dy ca cun dy dn th nht ang mc vo cquy thtrong cun dy dn kn th hai xut hin dng in.n. Dng thanh st non lin tc ng m mch t ca mt nam chm mng nga th trong cun dy dnkn cun quanh nam chm xut hin dng in cm ng.6. Hai b phn chnh ca my pht in xoay chiu l ...............................v .......................... ............ B phnng yn gi l .........................., b phn ..................... gi l ......................C th b tr stato l ................................... cng c th l ............................7. Trong inam xe p hai b phn chnh c th c b tr theo 2 cch: ..............................................................................................................................................................8. Theo cch th nht dng in i chiu khi ................................................................

......................................... Theo cch th hai dng in i chiu khi ............................

..........................................................................................................................................9. Vnh khuyn v thanh qut c tc dng ................................................................................................................................................................................................................10. pht ra dng in mnh (cng sut ln) th tc bin i s ng sc t xuyn qua cun dydn phi ..........................................................................................11. Cc cch tng tc bin i s ng sc t qua cun dy ca my pht l:- Tng ...................... quay ca ...................................................- Tng ..................... ca t trng ( dng nam chm mnh, nam chm in).- Tng s .............................. ca cun dy dn.

BUI 19: Bi tp v cc tc dng ca dng xoay chiu, truyn ti in nng i xa.1. Dng in xoay chiu c nhng tc dng no ? Tc dng no khng c ?2. Khi i chiu dng in chy qua mt cun dy dn th mt kim nam chm ang nm gn mt ung dy s phn ng th no ?A. Nm nh c. B. o ngc cc t. C. Xoay nghing i so vi trc.3. Khi i chiu dng in chy qua mt cun dy dn rt nhanh v lin tc (xoay chiu) th mt kimnam chm ang nm gn mt u ng dy s phn ng th no ?A. Nm nh c. B. o cc t lin tc. C. Xoay nghing i so vi trc.4. Mt cun dy dn c dng in xoay chiu i qua s tc dng ln mt li st:A. Mt lc y. B. Mt lc ht. C. Khi ht, khi y.

5. Mt dng in xoay chiu i qua mt dung dch mui s:A. Gii phng kim loi ra 1 in cc. B. Gii phng kim loi ra 2 in cc.C. Khng gii phng kim loi ra in cc no c.6. Nu v d ng dng ca mi tc dng sau y ca dng in xoay chiu ?Tc dng Tc dng nhit Tc dng t Tc dng quang



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V dng dng

7. Khi dng in trong khung dy dn i chiu th chiu ca lc t trng tc dng ln khung dy dns th no ? Dng ampe k mt chiu o cng ca dng in xoay chiu c khng ? V sao ?8. Cu to vn k, ampe k xoay chiu c b phn chnh l g ? hot ng th no ? Mc vn k xoaychiu c cn ch mc ng cc hay khng ?

9. Am pe k, vn k xoay chiu c g khc so vi ampe k, vn k mt chiu ?Loi K hiu trn b mt B phn chnh Cch mcAmpe kvn k

mt chiuAmpe kvn k

xoay chiu10. Truyn ti in i xa in nng b hao ph bi nguyn nhn no ?11. Vit cng thc tnh in nng hao ph v gii thch mi k hiu trong cng thc ?

12. Trm thu in nh c cng sut 2kW pht ra dng in xoay chiu c hiu in th 220V truyn vxm trn ng dy c tng in tr l 2. a. Tnh cng sut hao ph trn ng dy ? b. Tnh hiu suttruyn in nng ? c. Tnh hiu in th gia hai u dy u xm ? d. Tnh cng dng intrn dy truyn ti ?13. ng dy 500kV Bc-Nam di 1700km. Mi km dy dn c in tr 0,1. Cng sut in phitruyn i l 10MW. a.Tnh cng sut hao ph trn ng dy ? b. Tnh hiu sut truyn ti ? c. Tnh hiuin th gia hai u dy cui ng truyn ti ?d. Tnh cng dng in trn dy ti ?14. Cng sut hao ph trn ng dy s thay i th no khi: a. Chiu di ng dy ti in tng gpi ? b. Hiu in th u ng dy tng gp i ?

15. a. Nu cc cch c th lm gim hao ph in nng trn dy truyn ti ?b. Cch no c chn s dng trong thc t ? V sao ?16. Tng U ln n ln trc khi truyn i th s gim hao ph trn dy ti bao nhiu ln ?17. gim hao ph ti in 100 ln th phi tng U trc khi truyn i bao nhiu ln ?18. Mun tng hiu sut truyn ti in v xm (bi 12) ln n 96% th phi nng hiu in th trckhi truyn i ln n bao nhiu vn ? Khi hiu in th gia hai u dy u xm l bao nhiuvn ? Tnh cng dng in trn dy ti ?19. Nu truyn cng sut 10MW trn ng dy Bc-Nam di 1700km nu m hiu in th truyn i cht 200kV th hao ph trn dy ti s tng ln bao nhiu ln ? Hiu sut truyn ti in nng s cn l baonhiu % ? Tnh cng dng in trn dy ti ?20. T nh my n thnh ph A c ng dy 500kV. Cng sut in cung cp cho thnh ph l

270MW, cng sut hao ph trn dy ti l 30MW. Tnh cng dng in trn dy ti ? Tnh hiu inth khi vo thnh ph ? Tnh in tr ca ng dy ti ? Tnh hiu sut truyn in nng ca ng dy?

BUI 20: Bi tp v my bin th, lp rp-vn hnh.1. a. Cu to ca my bin th gm: ......................................................................................................................................................................................................................

b. Nguyn tc hot ng ca my bin th da vo hin tng .....................................C th l: Cho dng in ................................. i qua cun s cp s to ra trong cun dy v xung

quanh mt t trng ....................................................... S ng sc t xuyn qua cun thcp ............................................... s lm cho trong mch in ca cun th cp xuthin .............................................. v l mt dng in .....................2. a. Xc nh cu ng, cu sai trong cc cu pht biu v cu to, hot ng:A. My bin th bin i dng in xoay chiu thnh dng in mt chiu.



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B. My bin th lm tng hoc gim hiu in th xoay chiu.C. My bin th lm bin i cng dng in mt chiu.

b. My bin th c th tng hiu in th ca pin hay c quy c khng ? V sao ?....................................................................................................................................................................................................................................................................................c. Nu cc cch lm mt my bin th ? ...................................................................................................................................................................................................................

3. a. Vit cng thc bin th v ngha tng k hiu trong cng thc ?................................................................................................................................................................................................................................................................................................................................................................

b. H s bin th l g ? ................................................................................................c. My tng th th kt qu l U2 ... U1 do cu to phi c n2 ... n1

My h th phi c n2 ... n1 kt qu l U2 ... U14. a. Lp my bin th vo mch in v vn hnh theo th t nh sau: ...................................................................................................................................................................

..........................................................................................................................................b. Xc nh cu ng, cu sai trong cc cu pht biu v cch lp rp, vn hnh:A. tng th ta lp cun dy c nhiu vng hn vo ngun in xoay chiu.B. Lp xong cun s cp vo ngun, ng in ri lp tip cun th cp vo mch ra.C. h th ta lp cun nhiu vng hn vo ngun in xoay chiu, cun th cp vo mch ra, kim tracn thn ri ln lt ng in mch s cp, mch th cp.5. a. Cun s cp l cun dy dn c ni vo ..............................................................Cun th cp l cun dy dn c ni vo ....................................................................

b. Xc nh cu ng, cu sai trong cc pht biu sau:A. Cun s cp l cun dy dn c nhiu vng hn trong hai cun dy my bin th.

B. Cun th cp l cun dy c t vng hn trong my tng th.C. Mc h th th phi mc cun dy dn nhiu vng hn vi ngun xoay chiu.6. a. Bit U1 = 220V, U2= 6V, n1 = 2000.S vng n2 = .............................................. H s bin th k = ...................................

b. Bit U1= 220V, n1 = 500, n2 = 2000.Hiu in th U2 = ..................................... H s bin th k = ....................................8. My pht c P =5kW v hiu in th xoay chiu 500V. Dy ti c in tr 5.a. Tnh Phao ph ? Tnh Itrn dy ? Tnh Uni n ? Tnh hiu sut truyn ti H ?

b. hiu sut H = 96% th phi c Utruyn i = ? Dng my tng th c h s k = ?c. Khi Uni n= ? Bit Utiu dng= 220V. My h th c n1= 5000 th n2 = ?

9. My pht xoay chiu c P =5kW. Dy ti c in tr 5 v hiu sut H = 90%.a. Tnh Utruyn i ? Tnh Rdy ti ? Tnh Itrn dy ? Tnh Uni n ?

b. My pht ra U = 250V. My tng th c n2 = 5000 th n1= ?c. Bit Utiu dng= 220V. Tnh h s k ca my h th ?

BUI 21: Kim tra chng 2. ( SGV)

BUI 21: Hin tng khc x nh sng. Thu knh hi t.1. a. Hin tng khc x nh sng l g ? ................................................................................................................................................................................................................

b. Hin tng no khng phi l khc x nh sng ? A NA. Cu vng xut hin khi tri sp ma ging. Khng khB. Nhn y h nc trong thy cn hn khi li xung h.C. Nhn xung h nc thy bng cy ven h. ID. Th c cnh vo bnh cu ng nc thy c to hn. Thu tinh



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d. Trn hnh v cho bn gc no l gc khc x ?2. Khi nh sng truyn t khng kh vo nc,

gc khc x ............... gc ti N BKhi nh sng truyn t nc ra khng kh th gc khc x ................. gc ti.Khi gc ti bng 0 th gc khc x Khi gc ti tng th gc khc x Hin tng phn x ton phn xy ra khi nh sng truyn t . ra .. vi iu kin gc

ti

3. Nhn xt trong mi hnh v ng ch no, sai ch no ?

Khng kh Khng kh Thu tinh Khng kh

Nc

..................................................

..................................................4. V nh ca on a nm Otrong nc gii thch hin o M

tng nhn thy a nh b gy.5. D on v v v tr nh Ncca vt trong khng kh khi M onhn t di nc ln.6. bt c di nc c chnh xc th c phi nhn con c theo phng th no ?7. Ti sao c hin tng c nm cch mt on pha di l cy sng ni trn mt h nc trong mnghing mt th no cng khng nhn thy c ?8. S khc x nh sng trong khng kh v nc khng ng u to nn nh th no ?

Gii thch hin tng quan st c ?9. Thu knh hi t c cu to th no ? dy phn ra th no so vi chnh gia ?

.........................................................................................................................................

.........................................................................................................................................10. Cho v d v thu knh hi t trong thc t ? ...................................................................................................................................................................................................11. Chm tia sng song song ti thu knh th chm tia l sau thu knh th no ? ................................................................................................................................................12. Quang tm l im th no ? Trc chnh l ng th no ? ...................................................................................................................................................................................................................................................................................................................13. ng truyn ca nh sng qua thu knh hi t c nhng tia sng c bit no ?

........................................................................................................................................

........................................................................................................................................14. V tip ng truyn ca cc tia sng hoc b sung tia ti thu knh hi t.

F O O F

BUI 22: Bi tp v thu knh hi t v nh ca vt to bi TKHT.

1. Nu tnh cht nh ca vt to bi thu knh hi t ?- Vt t trong khong OF th cho nh ............................................................................- Vt t ngoi khong OF th cho nh ...........................................................................2. dng nh ca vt to bi TKHT cn s dng my tia c bit ? ...........................3. Dng nh ca vt to bi TKHT trong cc trng hp sau y:



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F O F O

F O F O

T cc hnh v trn rt ra nhn xt v tnh cht, v tr, cao ca nh to bi TKHT:Nu vt cch thu knh mt khong d = f/2 th nh ........................................................Nu vt cch thu knh mt khong d m d


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O O

2. V tia ti cn thiu v xc nh tiu im F ca TKHT trn 2 hnh v sau:

O O

3. a. nh tht ca vt sau TKHT cao gp 2 ln vt v cch vt 6cm. V hnh. Tnh f ?b. nh to bi TKHT cng chiu, cao gp 2 ln vt, cch vt 2,5cm. V hnh. Tnh f ?

4. Cu no ng, cu no sai trong cc cu ni v TKHT sau y:a. So vi tia ti, cc tia khc x l ra sau TKHT u c xu hng b v gn trc chnh.

b. Mi chm tia sng song song i qua TKHT u hi t ti im F trn trc chnh.c. t mt im sng S trn trc chnh TKHT th mi tia l khng ct trc chnh.

d. im sng S trn trc chnh TKHT, cch O mt khong f th chm tia l song song.e. im sng S t trong khong OF th chm tia l sau TKHT s phn k.f. Thu knh hi t c th to ra c nh o v nh tht.g. TKHT c th to nh o cng chiu v b thua vth. nh tht v vt c th i xng vi nhau qua quang tm O ca TKHT.i. Vt v nh o ca n to bi TKHT c th cao bng nhau.

j. nh tht v vt c th i xng vi nhau qua TKHT.k. Vt t ti tiu im F th cho nh tht ti tiu im F sau TKHT.l. Vt cch O ca TKHT khong 2f th cho nh cng chiu v cch O ng bng 2f.m. Nu nh ln ngc v cao hn vt th vt nm cch O mt khong d


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2. Dng nh ca vt to bi TKPK trong cc trng hp sau y:

F O F O

T cc hnh v trn rt ra nhn xt khi di chuyn vt v gn thu knh phn k th nh cavt .............................................................................................................................3. Tm v tr ca vt bit v tr v tnh cht ca nh trong cc hnh v sau:

F O F O

4. Cho vt v nh ca vt to bi TKPK. Xc nh v tr thu knh, tiu im F.

5. V tip tia l, tia ti cn li TKPK v xc nh tiu im F trn 2 hnh v sau:

O O

6. a. nh o ca vt TKPK cao bng 1/2 vt v cch vt 3cm. V hnh. Tnh f ?

............................................................

............................................................

............................................................

............................................................

............................................................

............................................................

7. Cu no ng, cu no sai trong cc cu ni v TKPK sau y:a. So vi tia ti, cc tia khc x l ra sau TKPK u c xu hng b ra xa trc chnh.

b. Mi chm tia sng song song i qua TKPK u hi t ti im F trn trc chnh.c. im sng S trn trc chnh TKPK, cch O mt khong f th chm tia l song song.

d. im sng S t trong khong OF th chm tia l sau TKPK s phn k.e. TKPK to ra c nh o v nh tht. f. Vt v nh to bi TKPK cao bng nhau.g. Vt t ti tiu im F th cho nh tht ti tiu im F sau TKPK.h. Nu nh cng chiu v cao hn vt th nh s nm cch TKPK xa hn vt.

BUI 25: Bi tp v my nh v mt.



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1. a. Cc b phn chnh ca my nh l: .......................................................................b. Vt knh ca my nh l ........................................................................................c. nh trn phim c cc tnh cht ..............................................................................

2. a. Khng th dng TKPK lm vt knh ca my nh v .............................................b. Nu dng TKHT c tiu c ln lm vt knh th my nh .....................................c. My nh khng c phim th ....................................................................................d. Bung kn ca my nh m b h th ......................................................................

3. a. Khi vt tin li gn my nh th nh ca vt s .....................................................v nh ca vt hin ln trn phim s .....................................................................b. khc phc ta phi li v tr t phim trng vi .................................................c. Nu vt li ra xa my nh ta th nh s ..................................................................

khc phc bng cch ..............................................................................................4. Vt cao 2m v cch my nh 4m. su ca bung ti l 5cm. V hnh v tnh cao nh ca vt

trn phim ?......................................................................................................................................................................................

.............................................................

.............................................................5. Chp nh vt cao 50cm cch my nh 1,5m th c nh cao 2,5cm. su bung ti ca my nh

l bao nhiu ? ...............................................................................................................................................................................................................

6*. Vt knh ca my nh c tiu c f = 5cm. Dng my chp nh mt vt cao 2m, cch my 4m.iu chnh ng knh c nh r nt trn phim. Tnh su ca bung ti khi ? Tnh cao canh ? .............................................................................................................................................................................................................................................................................................................................................

......................................................................................................................................7. Hai b phn quan trng nht ca mt v mt quang hc l .........................................8. Cc b phn quang hc tng ng gia mt v my nh l: .............................................................................................................................................................................9. a. Vt knh ca my nh l TKHT c tiu c f ..........................................................Thu tinh th ca mt l TKHT c tiu c f ....................................................................

b. Khi thu tinh th phng ln th tiu c f ..................., dt xung th tiu c f ............S phng ln, dt xung ca thu tinh th nh r nt trn vng mc gi l s ..........c. Tiu c f ca thu tinh th di nht l khi mt quan st vt .....................................Tiu c f ca thu tinh th ngn nht l khi mt quan st vt ......................................

10. a. Khong cch t thu tinh th n vng mc ca mt ...........................................Khong cch t vt knh n v tr t phim ca my nh ..............................................

b. Lm thay i khong cch gia vt knh v v tr t phim nh r nt trn phim gi ls ........................................................................11. im cc cn l .........................................................................................................Khong cc cn l khong cch gia .............................................................................im cc vin l .............................................................................................................Khong cc vin l khong cch gia ............................................................................Khong nhn r ca mt l khong cch t .................................. n ..........................12. Mng li cch thu tinh th ca mt 2cm. Ngi ng cch ngi nh cao 16m mt khong 20m

quan st th nh ca ngi nh trn vng mc cao bao nhiu cm ?13*. Bit rng, mng li cch thu tinh th ca mt mt khong khng i bng 2cm. Mt ngi quanst mt vt t xa tin li n khi cch ngi 1,5m. Tiu c ca thu tinh th ngi thay i tgi tr no n gi tr no ? (tnh ra cm)



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BUI 26: Bi tp v mt cn th, vin th (mt lo).1. Mt cn th nhn r c vt .................. m khng nhn r c vt .................

Mt cn th c khong cc cn ................................ khong cc vin ......................Th thu tinh ca mt cn phng hn do tiu c .................... so vi mt thngKhi nhn xa, tiu c th thu tinh ca mt thng c 2cm, mt cn ..........................

2. Biu hin no sau y l ca mt cn th ?A. c sch phi gh mt gn sch. B. Ngi cui lp nhn khng r ch trn bng.

C. Ngi trong nh nhn khng r cc vt ngoi sn. D. C A, B, C u ng.3. Mt cn khng nhn r vt: A. gn B. xa C. mi v tr4. Xc nh mt no l mt cn th ?a. Mt c khong cc cn: A. 25cm B. 35cm C. 15cm

b. Mt c khong cc vin: A. 1,5m B. 5m C. 15m5. Khi khng iu tit (nhn vt xa), tiu im (v tr nh) ca mt cn nm :A. Ti mng li B. Sau mng li. C. Trc mng li6. mt li nhn r vt th phi lm cho nh dch v pha ...................... sao cho nh nm ti vng mc. nh dch v pha ................... th chm tia sng lt vo mt phi c b ...................... trc chnh ththu tinh, bng cch eo thu knh ......................

Nh vy, knh cn th l thu knh .........................................7. Mt cn nhn c vt xa nht l im ............................... ca mt. Khi eo knh cn, mt li nhnc vt rt xa v khi vt rt xa qua knh cn to thnh nh o nm tiim .................................... ca mt. Nh vy, tiu c ca knh cn bng khong ............................... camt.8. Mt ngi cn th phi eo knh c tiu c 60cm. Khi khng eo knh ngi nhn r vt xa nht cch mt: A. 30cm B. 120cm C. 60cm9. Mt cn nng nht th im cc vin cn cch mt 8,3cm (eo knh 12 ip). Thu knh no sau yc th dng lm knh cn th ? A. TKPK c f = 5cmB. TKHT c f = 5cm C. TKPK c f = 40cm D. TKHT c f = 40cm

10. Mt vin th nhn r c vt ............... m khng nhn r c vt .................Mt vin th c khong cc cn ............................ khong cc vin .........................Th thu tinh ca mt cn ............ hn do tiu c .................... so vi mt thng

11. Biu hin no sau y ch c mt vin th (mt lo)?A. c sch phi a ra sch ra rt xa. B. Ngi cui lp nhn r ch trn bng.C. Ngi trong nh nhn khng r cc vt ngoi sn. D. C A, B, C u ng.12. Mt lo khng nhn r vt: A. gn B. xa C. mi v tr13. Xc nh mt no l mt vin th ?Mt c khong cc cn: A. 25cm B. 50cm C. 15cm

14. Mt vin th khi nhn vt gn, nh ca vt hin ln :

A. Ti mng li B. Sau mng li. C. Trc mng li15. mt li nhn r vt th phi lm cho nh dch v pha ...................... sao cho nh nm ti vngmc. nh dch v pha ................... th chm tia sng lt vo mt phi c b ...................... trcchnh th thu tinh, bng cch eo thu knh ...................... Nh vy, knh lo l thuknh .........................................16. Mt vin th nhn c vt gn nht l im ............................. ca mt. Khi eo knh lo, mt linhn c vt cch mt 25cm v khi vt cch mt 25cm qua knh lo to thnh nh o nm tiim .............................. ca mt.17*. Mt ngi gi phi eo st mt mt knh lo c tiu c 75cm th nhn r vt cch mt 25cm. Hikhi khng eo knh ngi y nhn r c vt gn nht cch mt bao nhiu cm ? V hnh dng nh ca

vt qua knh, t tnh khong cc cn ca mt.18. Ghp mi phn a, b, c, d vi mi phn 1,2,3,4 thnh cu c ni dung ng.a. c sch hay i ng u khng phi eo knh 1. l eo knh che bi

b. eo knh c sch cn i ng th khng eo 2. l mt b cn thc. c sch hay i ng u phi eo knh 3. l mt cn tt



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d. i ng th eo knh, c sch th khng eo 4. l mt b lo th

BUI 27: Bi tp v knh lp v n tp thu knh.

1. Knh lp l thu knh ........................ c tiu c ................ Knh lp dng quan st vt ..................Vt cn quan st phi t trong khong ........................................... ca knh lp to ranh .............................................................

2. S bi gic G ca knh lp cho ta bit ......................................... ca knh lp. Dng knh lp c s bigic cng ln quan st th nh ca vt quan st c cng ..........3. Thu knh no sau y c th dng lm knh lp ? A. TKPK c f = 5cmB. TKHT c f = 5cm C. TKPK c f = 50cm D. TKHT c f = 50cm

4. a. Bit knh lp c s bi gic G = 10, knh c tiu c f = ..................b. Knh lp c tiu c f = 5cm th s bi gic G = ...................................c. Knh lp c s bi gic cng ln th tiu c cng ................................d. Knh lp c tiu c cng b th s bi gic cng .................................

5. Dng 2 knh lp c G1 = 5 v G2 = 20 quan st cng mt vt nh th nh quan st c knh noln hn ? Tiu c ca knh no ln hn ?

.........................................................................................................................................................................

...........................................................................................................6. Dng knh lp c G = 5 quan st th phi t vt cch knh lp mt khong:A. 5cm B. ln hn 5cm C. b thua 5cm D. bao nhiu cng c.7. Dng knh lp c G = 10 quan st mt con kin di 2mm cch knh lp mt khong 2cm. V hnh

biu din s to nh v tnh di nh ca con kin.....................................................................................................................................................................................................................

.....................................................

.....................................................8. Nu dch knh lp li gn con kin th thy nh ca con kin thay i th no ?....................................................................................................................................................................................................................................................................................9. Dng knh lp c tiu c 10cm quan st mt vt t cch thu knh 5cm th thy nh ln hn vtmy ln ? .....................................................................................................................................................................................................................................10*. Dng mt knh lp c tiu c 10cm quan st vt cao 1mm. Mun c nh cao 10mm th phi tvt cch knh bao nhiu cm ? Lc nh cch knh bao nhiu cm ?

b. Dng mt thu knh hi t c tiu c 40cm quan st vt ni trn. Ta mun c nh cao 10cm th phit cch thu knh bao nhiu cm ? Lc nh cch knh bao nhiu cm ?

11.

. .F F



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a. V tip ng truyn cc tia sng trn qua 2 thu knh hi t.b. Nu thu knh sau l TKPK th ng truyn cc tia s th no ?

BUI 28: Bi tp v nh sng trng, nh sng mu.1. a. nh sng do Mt Tri, n dy tc nng sng pht ra l nh sng ........................

b. nh sng do n LED, n lade, n xnon pht ra l nh sng ...........................c. nh sng do natri, ka li, ..... b nung nng pht ra l nh sng ..............................

d. Mu nh sng pht ra trong cu b, c lun lun ....................., l mu ...................2. Trong nh sng trng ca Mt Tri phn tch ra c my nh sng mu ? K tn ca cc nh sng mu ? ............................................................................................................................................................................................................................................3. Lc mu nh sng l ...................................................................................................Cc mu kia khng xut hin na l v ...........................................................................V d v cc cch lc mu: .............................................................................................4. Nu kt qu ca cc trng hp lc mu sau y:a. Chiu nh sng trng qua tm thu tinh mu xanh th c nh sng ..................... ..

b. Chiu nh sng trng qua chai nc ngt mu vng th c nh sng ..................... c. Chiu nh sng

qua tm thu tinh mu th c nh sng ..................... ..........d. Chiu nh sng vng qua tm thu tinh mu xanh th c nh sng ..................... ..e. Chiu nh sng trng qua ln lt 2 tm thu tinh th c nh sng ...................g. Chiu nh sng trng i qua ln lt 2 tm thu tinh mu xanh v mu th c nhsng ..................... .............h. Chiu nh sng vng i qua ln lt 2 tm thu tinh mu xanh v mu th c nhsng ..................... .............5. Hy cho bit mu ca nh sng chiu vo tm thu tinh trong mi trng hp sau:a. thu tinh mu xanh, nh sng i ra mu xanh.

b. thu tinh mu vng, nh sng i ra mu en.

c. thu tinh mu , nh sng i ra mu en.d. thu tinh khng mu, nh sng i ra mu tm.6. Hy cho bit mu ca knh lc trong mi trng hp sau y:a. nh sng vo vo trng, ra mu tm.

b. nh sng vo mu , ra mu .c. nh sng vo mu xanh, ra mu en.d. nh sng vo mu trng, ra mu en.7. Tn sc l hin tng ..................................................................................................V d v s tn sc nh sng : .........................................................................................8. Nu kt qu s tn sc nh sng trong mi trng hp sau y:

a. Chiu nh sng Mt Tri qua lng knh .................................................................................................................................................................................................................

b. Chiu nh sng n pin qua lng knh .........................................................................c. Chiu nh sng n LED qua lng knh ......................................................................9. Nhiu x cch t l ............................................................................................................................................................................................ Nhiu x t a CD, t bong bng x phng, tlp du mng ni trn mt nc u l ............................................10. C cc cch phn tch nh sng sau y: .............................................................................................................................................................................................................11. Trn hai nh sng mu s c nh sng .................................................................

12. a. Ba nh sng mu c bn l ...................................................... Trn ln lt 2 trong 3 nh sng muc bn ta c .............................................................................

b. Trn ba mu c bn theo t l thch hp th s c nh sng ...................................13. c nh sng trng ta c th trn mu nh sng theo cc cch sau y:a. .....................................................................................................................................



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b. .....................................................................................................................................14. Nhn vo mt n neon ang bt sng b chn bi mt tm knh trong sut c 3 mng mu: , lc,lam. Ta s nhn thy mu g trong mi trng hp sau:a. bt 2 mng , lc. b. bt 2 mng lc, lam.c. bt c 3 mng. d. khng bt mng no.

BUI 29: Bi tp v mu sc ca vt v tc dng ca nh sng.

1. Ta nhn thy vt c mu l do ..............................................................................................................................................................................................................................2. a. Vt mu trng l vt c kh nng ...........................................................................

b. Vt c mu vng l vt c kh nng ch tn x ..........................................................c. Vt c mu tm l vt c kh nng ch tn x ............................................................d. Vt c mu xanh l vt c kh nng hp th .......................................................................................................................................................................................................e. Vt c mu l vt c kh nng hp th ...........................................................................................................................................................................................................g. Vt c mu en l vt c kh nng .............................................................................

3. Ta nhn thy vt c mu g trong mi trng hp sau y:a. Chiu nh sng trng vo t giy v mi.b. Chiu nh sng mu xanh vo t giy v mi.c. Chiu nh sng trng vo hoa hng dng.d. Chiu nh sng mu vng vo hoa hng dng.e. Chiu nh sng mu vo hoa hng dng.g. Chiu nh sng Mt Tri vo l cy. h. Chiu nh sng mu vng vo l cy.i. Chiu nh sng mu xanh vo l cy.k. Chiu nh sng mu vng vo m ni ca ngi Hmng.4. Cho bit mu ca vt khi t di nh sng Mt Tri trong cc trng hp sau:

a. t di nh sng mu xanh vt c mu xanh.b. t di nh sng mu vt c mu en.c. t di nh sng vt c mu tm v t di nh sng da cam th vt c mu en.d. t di nh sng xanh vt c mu en v t di nh sng vng vt c mu en.5. Xc nh mu ca nh sng chiu vo trong mi trng hp sau:a. ang thy vt mu en. Trc ngoi tri vt c mu xanh.

b. ang thy vt c mu vng. Trc di nh sng xanh vt c mu en.c. ang thy vt c mu xanh. Trc di nh sng mu vng vt c mu vng.6. Cu no ng, cu no sai ?A. T ba di nh sng mu no cng nhn thy mu .

B. T giy trng di nh sng mu vng cng c thy n mu trng.C. Mi tc en th ng ch no cng thy mi tc c mu en.D. Bt mu xanh trong phng ti cng vn thy bt c mu xanh.7. Din vin ht trn sn khu khng thay i trang phc m thy ban u o v qun mu en, sau o mu tm v qun mu tm, cui cng l o mu xanh v qun mu en. Nu ban ngy th din vin ang mc o mu g ? qun mu g ?8. a. nh sng c cc tc dng sau : .........................................................................................................................................................................................................................

b. Thng qua cc tc dng nng lng nh sng bin i thnh cc dng nng lng khcl ...................................................................................................................

9. Ch ra tc dng ca nh sng v s bin i nng lng trong mi trng hp sau:a. Phi thc ngoi sn kho. => ........................................................................................

b. Pin mt tri pht in. => ...........................................................................................c. Cy ci quang hp. => ................................................................................................d. Ngi si bn bp la => ...........................................................................................



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e. iu khin tivi t xa => ...............................................................................................g. Tm nng ci xng. => ....................................................................................h. Chi mt khi nhn mt tri. => ....................................................................................i. Pin mt tri va pht in va nng ln. => ................................................................k. Cy ci va lm thot hi nc va ln ln. => .........................................................10. a. Ti sao i di nng ma h mc mu sm th cng nng ? ......................................................................................................................................................................

b. Mi nh, tng nh c mu g th ma h nng ? ..................................................BUI 30: Bi tp v chuyn ho-bo ton nng lng.1. a. Vt c nng lng l vt .................................................................................................................................................................................................

On Tap Co Ban Vat Ly 9

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