A circular coil of 100 turns, radius 10 cm carries a current of 5 A . It is suspended vertically in

Question

A circular coil of 100 turns, radius 10 cm carries a current of 5 A . It is suspended vertically in a uniform horizontal magnetic field of 0.5T lines making an angle of $60^{\circ}$ with the plane of the coil. The magnitude of the torque that must be applied on it to prevent it from turning is\

Professor PC Thomas Classes · Answer

$	au=$ NIAB $\sin \alpha, \alpha=30^{\circ}$\