Question

A hollow metal sphere of radius 5 cm is charged such that the potential on its surface is 10 V. The potential at the center of the sphere is

(A) 0 V 

(B) 10 V 

(C) Same as at point 5 cm away from the surface outside sphere. 

(D) Same as a point 25 cm away from the surface. 

Answer 1

Correct option (B) 10 V

Explanation: 

The potential at center is same as that of the surface. 

∴ V = 10 Volts