The self inductance of a closely wound coil of 200 turns is 10 mH . Determine the value of magnetic flux through the cross -section of the coil when the current passing through the coil is 4 mA.

The self inductance of the coil of 100 turns,in which a current of 4A produces a flux of 40 Wb is

The self inductance of a coil is 5 H, a current of 1 A change to 2 A within 5 second through the coil. The value of induced e.m.f. will be

The value of mutual inductance of two coils is B 10 mH. If the current in one of the coil changes from 5A to 1A in 0.2 s, calculate the value of emf induced in the other coil. Also calculate the value of induced charge passing through thecoil if its resistance is 5 ohm.

A circular coil of radius 40 mm consists of 250 turns of wire in which the current is 20 mA. The magnetic field at the centre of the coil is

A flat circular coil of 70 turns and radius 10 cm carriers a current I. If the magnetic field at the centre of the coil is 0.003 wb//m^2 , find the value of current.

A coil having 100 turns carrying current of 2 mA has self-inductance 10 mH. Find the magnetic flux linked with each turn of the coil

Calculate the magnitude of the magnetic induction due to a circular coil of 400 turns and radius 0.05 cm, carrying a current of 5A, at a point on the axis of the coil at a distance of 0.1 m from the centre of the coil.

The magnetic induction at the centre of a current carrying circular coil of radius 10cm is 5sqrt(5) times the magnetic induction at a point on its axis. The distance of the point from the centre of the coil in m is