Potential of a Sperical charged shell

[Neumann12]

okay this isn't really a homework problem, we just got done doing a uniformly charged sphere, but in a good conductor electrons are going to repel each other and move to the surface, and that got me thinking.

How do you find the potential inside a uniformly charged SHELL. Someone said the potential was constant but how do you show this?

 

[Dick]

The point is that inside of a conductor (good or not), if the potential isn't constant then that means a current will flow. Questions like this refer to the situation after all transient currents have stopped flowing.