Two circular coils are kept co-axially one alongside the other. If a current suddenly starts flowing in one coil, what will be the direction of current induced at that moment in the other coil?

The radius of a circular conducting coil of 100 turns is 10 cm . If 2 A current passes through the coil , what will be the magnetic moment generated ?

A cylindrical bar magnet is kept along the axis of a circular coil. If the magnet is rotated about the axis, will there be any current induced in that coil?

The Plane of a suspended current carrying rectangular coil makes an and theta with the direction of uniform magnetic field. Calculate the torque acting on the coil.

Self-inductance of a coil is 1H. If 1A current passes through it, what will be the magnetic flux linked with the coil?

The plane of a suspended current carrying rectangular coil makes an angle theta with the direction of uniform magnetic field. Calculate the torque acting on the coil.

If current I flows in a coil of area A and number of turns n , the magnetic moment of the coil is

A steady current is flowing through a long wire. If it is converted into a single turn circular coil, the magnetic field produced at its is B. Now it is converted into a circular coil having n tunrs. What will be the magnetic field at the centre of the coil ?

The radius of each of two circular coils of single turn is r. The two coils are placed parallel to each other with a common axis. The distance between their centres is (r)/(2) . If equal current is sent through the two coils in the same direction, what will be the magnetic field (i) at the centre of each coil and (ii) at the mid point on the line joining the centres of the coils? What is the ratio of these two magnetic fields?