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jesuslovesu
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Homework Statement
A hollow spherical conducting shell of inner radius b and outer radius c surrounds its concentric with a solid conducting sphere of radius a. The sphere carries a net charge -Q. The shell carries net +3Q. Find an expression for the potential difference from infinity to the surface of the sphere.
http://img185.imageshack.us/img185/3596/rabbitatesthekv2.th.jpg
Sorry it's a little cut off, but you get the idea.
Homework Equations
V = kq/r
The Attempt at a Solution
Well, I'm not quite sure if I need to use calculus or Gauss's law or what. The best so far that I've been able to come up with is V1 = k(-Q)/a, V2 = k(3Q)/(c-b)
I know that if the inner sphere were not there, then the electric field would be zero inside the shell.
If I recall correctly from the last chapter I had, the outside surface of the shell will be charged at +2q and the inner surface of the shell will be at q
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