The magnetic flux through a coil of 50 turns changes from 0.3wb per turn to zero in 1sec. Calculate the emf induced across the two ends of the coils.

The magnetic flux through a coil changes from 12 mWb to 6 mWb in 0.01 s. What is the induced emf?

A wire cuts across a flux of 0.2x10^(-2) weber in 0.12 second. Calculate the emf induced.

In a coil an emf 10V is induced when the current changes at the rate of 20 AS^(-1) Calculate the self-inductance of the coil.

Find the mutual inductance between the two coils if a current of 10 ampere in primary coil changes the flux by 500 Wb per turn in the secondary coil of 200 turns. Also, find the induced e.m.f. acorss the ends of the secondary coil if this change occurs in 0.5 sec.

A magnetic field of flux density 10T acts normal in a coil of 50 turns having 100cm^2 area.The e.m.f induced if the coil is removed from magnetic field in 0.1 second is

The magnetic flux through a coil perpendicular to its plane and directed into paper varying according to the relation phi= (5t^2+10t+5) mWb. Calculate the emf induced at t= 5 sec.

A circular coil of wire consisting of 80 turns, each of radius 50 mm carries a current of 0.25 A. What is the magnetic field at the centre of the coil?