A test charge `q_0` is brought from infinity along the perpendicular bisector of an electric dipole. The work done on `q_0` by the electric field of the dipole is

Options

A. zero
B. negative
C. positive
D. proportional to `q_0`

Answer

A

Explanation

At a line along the perpendicular bisector of dipole (i.e, along equatorial line), the electric potential is zero, so work done in carrying the charge along this line is zero (W=vq if V=0 then W=0)