An electric dipole in placed completely inside a sphere in such a manner that centre of dipole coincides with the centre of sphere.

Options

A. Flux of electric field through the sphere may be non-zero.
B. Flux of electric field through the sphere must be zero.
C. Electric field intensity everywhere on sphere is zero.
D. Electric field intensity everywhere on sphere is non-zero

Answer

B, D

Explanation

Electric dipole is completely inside the sphere. Hence, the net charge enclosed by the sphere is zero and using Gauss.s law, the flux associated with the sphere must be zero. Therefore, option (a) is not correct but (b) is correct.
We should be aware of the fact that there is no such point around an electric dipole where its net electric field intensity is zero. Hence option (c) is not correct but (d) is correct.