An electric dipole is placed parallel to a uniform electric field. Find the correct one of the following statements :

Options

A. (A) net force is maximum, but torque is zero.
B. (B) net force and torque both are maximum.
C. (C) net force and torque are zero.
D. (D) net force is zero, but torque is maximum.

Answer

C

Explanation

Magnitude of forces on unlike charges of dipol are same but in opposite direction. So thai resultant F = 0 and in `C=pEsintheta, theta =0` Therefore `tau=0`