Question

Obtain an expression for the torque τ acting on a current carrying loop in a uniform magnetic field B. Draw the necessary diagram.

A circular loop of wire, carrying a current 'I' is lying in xy-plane with its centre coinciding with the origin. It is subjected to a uniform magnetic field pointing along + z-axis. The loop will :

A current carrying circular loop of magnetic moment M⃗ is suspended in a vertical plane in an external magnetic field B⃗ such that its plane is normal to B⃗. The work done in rotating this loop by 45° about an axis perpendicular to B⃗ is closest to :

Assertion (A) : The torque acting on a current carrying coil is maximum when it is suspended in a radial magnetic field. Reason (R) : The torque tends to rotate the coil on its own axis.