Obtain an expression for the torque on a loop placed in a uniform magnetic field.

A wire of length 44 cm carrying a current of 2 A is bent and the two ends are joined. This shape is placed in a uniform magnetic field of 50 mT. If the magnetic field in North-South direction, then the maximum torque acting on the shape is

A loop ABCD containing two resistors as shown in figure is placed in a uniform magnetic field B directed outward to the plane of page. A sliding conductor EF of length l and of negligible resistance moves to the right with a uniform velocity v as shown in Fig. Determine the current in each branch.

Draw the magnetic field lines in uniform magnetic field.

A current loop in a magnetic field

What happens when a current carrying coil is placed in a uniform magnetic field?