A positive charge `Q` is placed at the centre `O` of a thin metalic spherical shell. Select the correct statements from the following:
(i) The electric field at any point outside the shell is zero
(ii) The electrostatic potential at any point outside the shell is `(Q)/(4 pi epsilon_(0) r)` , where `r` is the distance of the point from `O`
(iii) The outer surface of the spherical shell is an equipotential surface
(iv) The electric field at any point inside the shell , other than `O` , is zero

Options

A. The electric field at any point outside the shell is zero.
B. The outer surface of the spherical shell is an equi- potential surface
C. The electric potential at any point outside the shell is `Q//(4 pi epsi_0 r)`, where r is the distance of the point from O.
D. Both (b) and (c) are correct.

Answer

D