Question

A charged hollow sphere does not produce an electric field at any

• A. inner point
• B. outer point
• C. beyond 2 metres
• D. beyond 10 metres

Answer 1

Answer: (A)

inner point

Answer 2

Let us consider a charged hollow sphere with charge The charge q is on the surface of the sphere. We have to calculate the electric field at an interior point P distance r from the centre. If we imagine a Gaussian spherical surface through the point P and concentric with the given shell, we can use the Gauss theorem, $E \times 4 \pi \,r^{2}=\frac{q'}{E_{0}}$ where q' is the charge enclosed by this Gaussian surface = 0 $\therefore E=0$