PeKA PHYSICS SMAPT

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Signature of teacher

MUHAMAD NAZRI SAMSUDIN

SPI

S

Plan investigation or experiment Carry out investigation or experiment

Collect and record investigation or experiment

Interprete data and make conclussion Scientific skills and noble values

SPI

SECTION 1 SECTION 2

SPIPI PI

SPI

INDEX NO DATE

IC NO

SEKOLAH MENENGAH AGAMA AL-MAIDAH ADDINIAHPADANG TENGKU

SCHOOL BASED ASSESSMENT YEAR :INSTRUMENT SCORING FORM

EXP. CODE

PERFORMANCE INDEX (PI) TO BE ASSESEDCONSTRUCT I

CONSTRUCT II CONSTRUCT III CONSTRUCT IV CONSTRUCT V

SPM PHYSICS PeKA (CODE : 4531 / 4)

STUDENTS NAME FORM

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TITLE : e.m.f and INTERNAL RESISTANCEe.m.f dan RINTANGAN DALAM

CHAPTER : CHAPTER 7 : ELECTRICITYBAB 7 : ELEKTRIK

NAMA :

NO. I/C : - -

ANGKA GILIRAN :

KELAS : ULUM TARIKH : - -

TAHUN SPM :

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TITLE : e.m.f and INTERNAL RESISTANCEe.m.f dan RINTANGAN DALAM

CHAPTER : CHAPTER 7 : ELECTRICITYBAB 7 : ELEKTRIK

Inferens : Electromotive force depends on internal resistenceRintangan dalam mempengaruhi daya gerak elektrik

C1 P1

Hipotesis : When internal resistence increases, electromotive force also increases.Semakin tinggi rintangan dalam, semakin tinggi daya gerak elektrik

C1 P2

Aim : To determine electromotive force and internal resistance.Untuk menentukan daya gerak elektrik dan rintangan dalam

C1 P3

Variable : [i] Manipulated : internal resistanceRintangan dalam

[ii] Responding : electromotive forcedaya gerak elektrik

[iii] Constant : number of batteriesbilangan bateri

C1 P4

Materials :

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Apparatus : batteries, rheostat, voltmeter, ammeter, switch, connecting wires , resistorBateri, reostat, voltmeter, ammeter, suis, wayar penyambung, perintang

C1 P1

Methods :

C1 P2

A

Vvoltmeter

switch

Rheostat

Connection wire

batteries

resistor

Ammeter

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Procedures : [a] Apparatus is set upRadas seperti dalam rajah disediakan

[b] Switch is on, rheostat is adjusted until ammeter shows a reading of 0.1 ASuis dihidupkan dan reostat dilaraskan sehingga bacaan ammeter pada 0.1 A

[c] The corresponding reading of voltmeter is taken and recordedBacaan voltmeter direkodkan dalam jadual

[d] The above steps are repeated for 4 values of current, 0.2 A, 0.3 A, 0.4A and 0.5ALangkah di atas diulang dengan menggunakan arus 0.2 A, 0.3 A, 0.4 Adan 0.5 A

[e] All ammeter and voltmeter readings are recorded in the tableKeseluruhan bacaan ammeter dan voltmeter direkodkan ke dalam jadual

[f] Graph V against I is plotted.Graf V melawan I diplotkan

C1 P3 P1 P2 P3

C2

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C1 P4 C3 P1

P2 P3 P4

C4 P1 P2 P3 P4 P5

Conclussion : When I increases , V decreases . that is I is inversely proportional to V.Hypothesis is acceptedApabila arus, I bertambah, beza keupayaan, V berkurang.

C4 P6

0.8

0.1

0.2

0.6

Voltage, V/V

1.4

1.3

1.1

1.0

0.9

0.3

0.5

Current, I/A

0.4

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Discussions :

[a] Based on your graph, state the relationship between current and voltageBerdasarkan graf, nyatakan hubungan antara arus, I dengan beza keupayaan, V

When current increases , the voltage is decreases.Beza keupayaan, V berkurang secara seragam dengan arus, I

[b] From graph, calculate the gradient of the graph voltage, V against current, IDaripada graf, hitung kecerunan graf beza keupayaan, V melawan arus, l

using formula ;menggunakan rumus ;

Gradient = ( y2 y1) / ( x2 x1)= ( 1.5 - 0.5 ) / ( 0 0.5 )= - 1.2

[c] From graph, determine the voltage when current = 0.25 ADaripada graf, hitung nilai beza keupayaan apabila arus = 0.25 A

From graph, Daripada graf,

voltage = 1.2 V

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voltage = 1.2 V

Precautionary : Make sure the wires are connected tightly.Pastikan wayar penyambung dipasang dengan kemas

Always switch off the current when the reading is not taken to avoid overheating. Of wires which lead to the increase in resistance.Pastikan suis sentiasa ditutup apabila tiada bacaan untuk mengelakkan panasyang boleh meningkatkan nilai rintangan dalam

Eye is perpendicular to the reading of voltmeter and ammeter to avoid parallax error.Kedudukan mata mesti bersudut tepat dengan skala bacaan untuk mengelakkan ralat paralaks

C4 P7

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