Question

An electric dipole is placed at the centre of a sphere. Mark the correct option:

• A. the flux of the electric field through the sphere is zero
• B. the electric field is zero at every point of the sphere
• C. the electric field is not zero anywhere on the sphere
• D. the electric field is zero on a circle on the sphere

Answer 1

Answer: (A), (C)

the flux of the electric field through the sphere is zero
the electric field is not zero anywhere on the sphere

The net charge inside the sphere is zero, hence from Gauss law, net flux is zero.
For a dipole, the net electric field is zero only at infinity and it is not zero at the surface of the sphere.