A square loop of side a hangs from an insulating hanger of spring balance. The magnetic field of strength `B` occurs only at the lower edge. It carries a current `I` . Find the change in the reading of the spring balance if the direction of current is reversed.

A square loop of side a carris a current I . The magnetic field at the centre of the loop is

A square loop of side a carris a current I . The magnetic field at the centre of the loop is

A square loop of edge 'a' carries a current l. The magnetic field at the centre of loop is

A square loop of wire of side a carries a current i . Calculate the magnetic field at the centre of the loop

A rectangular wire-loop of width a is suspended from the insulated pan of a spring blance as shown in A current I exists in the anticlockwise direction in the loop. A magnetic field B exists in the lower region.Find the change in the tension of the spring if the current in the loop is reversed.

A rectangular wire-loop of width a is suspended from the insulated pan of a spring blance as shown in A current I exists in the anticlockwise direction in the loop. A magnetic field B exists in the lower region.Find the change in the tension of the spring if the current in the loop is reversed.

A rectangular wire-loop of width a is suspended from the insulated pan of a spring blance as shown in A current I exists in the anticlockwise direction in the loop. A magnetic field B exists in the lower region.Find the change in the tension of the spring if the current in the loop is reversed.

A square conducting loop of side length L carries a current I.The magnetic field at the centre of the loop is

A square conducting loop of side length L carries a current I.The magnetic field at the centre of the loop is