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 (E = Vq, if V= 0, then W= 0).