A hollow conducting sphere of inner radius r and outer radius 2R is given charge Q as shown in figure, then the

Options

A. potential at A and B is same.
B. potential at O and B is same.
C. potential at O and C is same.
D. potential at A,B,C and O is same.

Answer

A, B, C, D

Explanation

a.,b.,c.,d.
points `A` and `B` lie within the same metal hence `V_(A)=V_(B)`. The potential inside a hollow sphere is same as potential at the surface, hence `V_(A)=V_(B)=V_(C)=V_(0)`.