question_answer

Shown in the figure is a shell made of a conductor. It has inner radius a and outer radius b, and carries charge Q. At its centre is a dipole p as shown. In this case:

A) surface charge density on the inner surface of the shell is zero even/where

B) surface charge density on the inner surface is uniform and equal                                                         \[\frac{\left( Q/2 \right)}{4\pi {{a}^{2}}}\] to

C) electric field outside the shell is the same as that of a point charge at the centre of the shell

D) surface charge density on the outer surface depends on                                                                 \[\left| \overrightarrow{p} \right|\] .