At what distance on the axis from the centre of a current carrying coil of radius r the magnetic field becomes `1/8` th of the magnetic field at the centre?

The magnetic field at the centre of the current carrying coil is

What will be magnetic field at centre of current carrying circular loop of radius R?

The ratio of magnetic fields on the axis of a cricular current cerrying coil of radius a to the magnetic field at its centre lying on the periphery of the surface of the sphere will be .

Ratio of magnetic field at the centre of a current carrying coil of radius R and at a distance of 3R on its axis is

The radius of a circular current carrying coil is R. The distance on the axis from the centre of the coil where the intensity of magnetic field is (1)/(2sqrt(2)) times that at the centre, will be:

When a current carrying coil is placed in a uniform magnetic field with its magnetic moment anti-parallel to the field.

When a current carrying coil is placed in a uniform magnetic field with its magnetic moment anti-parallel to the field.

The ratio of the magnetic field at the centre of a current carrying coil of the radius a and at distance 'a' from centre of the coil and perpendicular to the axis of coil is

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

Use Biot-Savart law to derive the expression for the magnetic field on the axis of a current carrying circular loop of radius R . Draw the magnetic field lines due to circular wire carrying current I .