Q. Torque acting on an electric dipole in a uniform electric field is maximum if the angle between p and E is
A) 180°
B) 0°
C) 90°
D) 45°
Explanation
(c) The torque acting on an electric dipole
$\tau = \mathbf{p} \times \mathbf{E} = pE\sin\theta$
Torque will maximum when value of sin $\theta$ will be maximum or $\theta = 90{^\circ}.$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.