Question
The torque on a current loop is zero if the angle between the positive normal and the magnetic field is either $\theta=0^\circ$ or $\theta=180^\circ$ In which of the two orientations, the equilibrium is stable?
$\text{U}=-\vec{\text{m}}.\vec{\text{B}}$
In the case of stable equilibrium potential energy is minimum. So, far $\theta=0^\circ$ Potential Energy is -ve and minimum.Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.