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!

Conceptual problem regarding parallel plate conductors

  1. Apr 24, 2012 #1
    1. The problem statement, all variables and given/known data

    if two plates are kept parallel P1 and P2. one has a charge (q)..the outer surface of this plate has a charge lets say (x) thus the inner surface has a charge (q-x)..this (q-x) induces an opposite charge -(q-x) on inner surface of P2. the outer surface of P2 is grounded.

    Why are the charges on outer surfaces of both the plates taken to be zero?

    3. The attempt at a solution

    (q-x) and -(q-x) are bound charges. ∴ the only charge that will be grounded will be the charge existing on the outer surface of P2. since the field between the two conductors has to be zero ∴we can use the expression for field and the following is the result.

    x/2εA + q-x/2εA = q-x/2εA + 0/2εA

    this gives x=0...therefore both the charges on the outer surface are zero
     
    Last edited: Apr 24, 2012
  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: Conceptual problem regarding parallel plate conductors
Loading...