Question

A hollow metal sphere of radius $5$ cm is charged such that the potential on its surface is $10V$. The potential at a distance of $2$ cm from the centre of the sphere is :

• A. zero
• B. $10V$
• C. $4V$
• D. $10/3V$

Answer 1

The correct option is B $10V$

The metal sphere is a conductor. The potential within or on the surface will be constant because filed inside the conductor is zero. Thus, potential at any point inside the sphere $=$ potential at the surface of the sphere $=10V$.