The field due to a wire of n turns and radius r which carries a current I is measure on the axis of the coil at a small distance h form the centre of the coil. This is smaller than the field at the centre by the fraction:

The field normal to the plane of a wire of n turns and radis r which carriers i is measured on the axis of the coil at a small distance h from the centre of the coil. This is smaller than the field at the centre by the fraction.

The field normal to the plane of a wire of 15 turns and radius r which carries 1 A is measured on the axis of the coil at a small distance d from the centre of the coil. This is smaller than the field at the centre by the fraction

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

Calculate the magnetic field due to a circular coil of 500 turns and of mean diameter 0.1m, carrying a current of 14A (i) at a point on the axis distance 0.12 m from the centre of the coil (ii) at the centre of the coil.

The magnetic field at the centre of the current carrying coil

A coil of 50 turns and 4cm radius carries 2A current then magnetic field at its centre is :- ?

A circular coil having N turns and radius r carries a current I. It is held in the XZ plane in a magnetic field Bhati . The torque on the coil due to the magnetic field is :

A circular coil of radius R carries an electric current. The magnetic field due to the coil at a point on the axis of the coil located at a distance r from the centre of the coil, such that r gtgt R , varies as