© 2013 Pearson Education, Inc. Planar charged electrodes guide electrons Cathode Ray Tube.
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Transcript of © 2013 Pearson Education, Inc. Planar charged electrodes guide electrons Cathode Ray Tube.
![Page 1: © 2013 Pearson Education, Inc. Planar charged electrodes guide electrons Cathode Ray Tube.](https://reader030.fdocuments.us/reader030/viewer/2022013011/56649d745503460f94a54258/html5/thumbnails/1.jpg)
© 2013 Pearson Education, Inc.
Planar charged electrodes guide electrons
Cathode Ray Tube
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© 2013 Pearson Education, Inc.
Application of Electric Fields: E-Ink
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© 2013 Pearson Education, Inc.
An Expert in Electric Fields
Electric eel
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© 2013 Pearson Education, Inc.
Field Lines Around Eel’s Body
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© 2013 Pearson Education, Inc.
Ampullae of Lorenzini: Shark Electric Field Sensors
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Charges Influence Surrounding Space
http://phet.colorado.edu/sims/charges-and-fields/charges-and-fields_en.html
http://www.falstad.com/vector3de/
http://www.cco.caltech.edu/~phys1/java/phys1/EField/EField.html
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© 2013 Pearson Education, Inc.
We believe in electric fields as physically real because there is an influence that can be independent of the particle that created the field .
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© 2013 Pearson Education, Inc.
Field Lines of Electric Dipole
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© 2013 Pearson Education, Inc.
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© 2013 Pearson Education, Inc.
If I put a charged point particle (blue dot) on a field line, then the particle will move so as to follow the field line.
A TrueB False
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© 2013 Pearson Education, Inc.
At which point is the electric field stronger?
A. Point A.
B. Point B.
C. Not enough information to tell.
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© 2013 Pearson Education, Inc.
Can Electric Field Vectors Cross?
(A) Yes(B) No(C) No idea
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Which is the electric field direction at the black dot?
E. None of these.
Slide 25-101
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© 2013 Pearson Education, Inc.
What is the direction of the electric field at the dot?
E. None of these.
Slide 26-22
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© 2013 Pearson Education, Inc.
Can Electric Field Lines Cross?
(A) Yes(B) No(C) No idea
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© 2013 Pearson Education, Inc.
At the dot, the y-component of the electric field due to the shaded region of charge is
A.
B.
C.
D.
E.
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© 2013 Pearson Education, Inc.
A
B
C
D
What is EE field magnitude at point P distance y from midline of two infinite charged lines
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© 2013 Pearson Education, Inc.
Which dipole experiences no net force in the electric field? A.
B.
C.
A. Dipole A.
B. Dipole B.
C. Dipole C.
D. Both dipoles A and C.
E. All three dipoles.
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© 2013 Pearson Education, Inc.
Which dipole experiences no net torque in the electric field?
A. Dipole A.
B. Dipole B.
C. Dipole C.
D. Both dipoles A and C.
E. All three dipoles.
Slide 26-90
A.
B.
C.