Question

A hollow metal ball carrying an electric charge produces no electric field at points.

• A. Outside the sphere
• B. On its surface
• C. Inside the sphere
• D. At a distance more than twice

Answer 1

Answer: (C)

Inside the sphere

Electric field due to a charge carrying hollow metallic sphere is given by
$E_r=0$ for $r<R$
where $R$ is the radius of sphere.
$E_r=\frac{KQ}{r^2}$ for $r\ge R$
So, electric field inside the hollow metallic sphere is zero but non zero outside it.