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!

Capacitance of concentric shells

  1. May 30, 2009 #1
    for the part of Capacitance of concentric shells

    why Va equals that?

    why the voltage on the surface of a is affected by -Q/(4pi*epsilon*b),
    which represents the voltage on the surface of b

    these two voltage represents something at different position!!
  2. jcsd
  3. May 30, 2009 #2


    User Avatar
    Homework Helper

  4. May 31, 2009 #3
    thank you
    i forgot that V in a shell/sphere is the same as if it's on the surface
    I thought the p.d. by the larger shell were different on the surface of the larger shell and on the surface on the smaller shell........
    that's why i got trouble

    anyway, thanks~
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook