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General Questions about Eletric Field and Eletric Potential

  • Thread starter CH1991
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Homework Statement





Homework Equations





The Attempt at a Solution



Hi! I have already write everything on the pictures(In attachment), I have already circled the correct answer, however, I am not sure explain it correctly. So, can you check my explanation or question?
Thanks!

7QZOQ.png
 

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Answers and Replies

  • #2
Hootenanny
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Question Two: The electric field is uniform (constant). Why do you think it isn't? See http://www.studyphysics.ca/30/fields.pdf" [Broken] to check your understanding of electric field lines.

Question Five: Yes. Since you are interested in the outward flux and the enclosed charge is positive, the flux through the surface is indeed, positive.

Question Six: You have the right idea, but I wouldn't use the word enclosed since the Gaussian surface doesn't enclose the negative charge. There is an additional [negative] contribution of flux through the left end cap due to the presence of the negative charge.

Question Seven: Are you sure that the electric potential is lower at A than B?

Question Eight: Again, are you sure that the electric potential is lower at A than B?
 
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Thank you!
 

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