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 centre of the sphere is

• A. zero
• B. 10 V
• C. same as at a point 5cm away from the surface
• D. same as at a point 25cm away from the surface

Answer 1

The correct option is B 10 V

Hollow metal sphere = spherical shell

Electric field inside shell = 0

{B} Potential in constant inside thin shell

potential at surface = potential at centre

=10V.