1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

2011 AP Physics C E&M frq #1 clarification

Tags:
  1. Apr 4, 2012 #1
    Problem 1 on last year's normal (not form b) frq for e&m part a asked to use Gauss' law to prove essentially that at any point P within a thin spherical shell of charge density σ = q/A and radius r that the electric field at this ambiguous point P is zero. The solutions for this problem went typically from the surface integral of the dot product of E and dA, and yielding that E(4πr2) = Qenclosed0, and then merely states with words that any explanation relating spherical symmetry to the problem gets a point. I tried doing some long messy integrals but only ended up with E = 2σ/ε0 which is definitely not the answer because although it is independent of the distance from the center of the shell, it's not zero.

    Sorry if my question doesnt make sense.

    I'm just looking for a more rigorous, thorough explanation for this problem

    Thanks!
    Anthony

    http://apcentral.collegeboard.com/apc/public/repository/ap11_frq_physics_cem.pdf
    http://apcentral.collegeboard.com/a..._electricity_magnetism_scoring_guidelines.pdf
    1. The problem statement, all variables and given/known data



    2. Relevant equations



    3. The attempt at a solution
     
  2. jcsd
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Can you offer guidance or do you also need help?
Draft saved Draft deleted



Similar Discussions: 2011 AP Physics C E&M frq #1 clarification
  1. AP Physics C E&M (Replies: 6)

Loading...