A thin uncharged conducting spherical shell has a charge q carefully placed at its center through a small hole in the shell.The charge q does not touch the shell.What is the charge on the outer surface of the shell?
A)q
B)−q
C)2q
D)0

Question

Quizplus · Accepted Answer

Since the sphere is uncharged, the charge on the inner surface must be opposite to q to cancel it out. However, since the shell is uncharged, there cannot be any charge accumulation on the outer surface, so the charge on the outer surface is 0 (neutral).

A Thin Uncharged Conducting Spherical Shell Has a Charge Q