A circular coil of 100 turns has an effective radius of 0.05 m and carries a current of 0.1 A. How much work is required to turn it in an external magnetic field of `1.5 Wb m^-2` through `180^@` about an axis perpendicular to the magnetic field. The plane of the coil is initially perpendicular to the magnetic field.

A circular coil of 100 turns and having an effective radius of 5cm carries a current of 0*1 ampere. How much work is required to turn it in an external magnetic field of 1*5 weber//m^2 through 180^@ about an axis perpendicular to magnetic field. The plane of the coil is initially perpendicular to the magnetic field.

A circular coil of 100 turns and having a radius of 0*05m carries a current of 0*1A . Calculate the work required to turn the coil in an external magnetic field of 1*5T through 180^@ about an axis perpendicular to the magnetic field. The plane of the coil is initially at right angles to the magnetic field.

A circular coil of 60 turns and radius 4 cm carries current of 1 A . How much work will be done in rotating the coil through 90^(@) . It is suspended freely in uniform magnetic field 0.2 T .

A circular coil of n turns and radius r carries a current I. The magnetic field at the center is

A circular coil of 0.2 m diameter has 100 turns and carries a current of 0.1 ampere. The intensity of magnetic field at the centre of the coil is -

A circular coil of wire consisting of 100 turns each of radius 8cm carries a current of 0.4A. What is the magnitude of magnetic field at the center of the coil

A circular coil of 16 turns and radius 10cm carrying a current of 0.75A rests with its plane normal to an external field of magnitude 5*0xx10^-2T . The coil is free to turn about an axis in its plane perpendicular to the field direction. When the coil is turned slightly and released, it oscillates about its stable equilibrium with a frequency of 2*0s^-1 . What is the moment of inertia of the coil about its axis of rotation?