Question

When does an electric dipole placed in a uniform electric field experience

a. Maximum Torque

b. Minimum Torque

Answer 1

$T=PE\sin \theta$

$\left(a\right)$ When electric field is perpendicular to the axis

$T=$ maximum as $\theta ={90}^o$

$\left(b\right)$ When electric field is along the axis

$T=0$ minimum