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!

Grounded conductor within a charged shell

  1. Jan 15, 2010 #1
    In a question there are two conducting shells of radii a and b (a<b),the outer shell is given a charge Q . And the inner shell is grounded then the potential of that shell was equated to zero and its charge was assumed q.
    And it resulted in an equation
    KQ/b + Kq/a = 0 this gave q = -(a/b)Q
    But when a conductor is grounded then the conductor can be taken as ground itself and then it will be equivalent of saying that we charged the ground with -(a/b)Q charge as the inner shell has this much charge.?
    Please help me clear it.
     
  2. jcsd
  3. Jan 19, 2010 #2
    Ground is a large resivor of charges that can be moved where ever needed. The rest of the ground has a charge of (a/b)Q as the opposite is now in that little ball.
     
  4. Jan 20, 2010 #3
    Yeah thanks!
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook