The coefficient of mutual inductance

In a transformer , the coefficient of mutual inductance between the primary and the secondary coil is 0.2 henry. When the current changes by 5 ampere//second in the primary, the induced e.m.f. in the secondary will be

A current of 10A in the primary coil of a circuit is reduced to zero. If the coefficient of mutual inductance is 3 H and emf induced in the secondary coil is 30 kV, time taken for the change of current is

A current of 10A in the primary coil of a circuit is reduced to zero. If the coefficient of mutual inductance is 3 H and emf induced in the secondary coil is 30 kV, time taken for the change of current is

In a transformer , the coefficient of mutual inductance between the primary and the secondary coil is 0.2 henry. When the current changes by 5 ampere//second in the primary, the induced e.m.f. in the secondary will be

Two circular coils are kept in vicinity of each other. The current in primary coil changes from 10 A to 6 A in 0.3 sec. Calculate the coefficient of mutual inductance of the pair of emf of 1V induced in secondary coil.

What are the factors on which coefficient of mutual inductance of two coils depends?

Two coil A and B have coefficient of mutual inductance M=2H. The magnetic flux passing through coil A charges by 4 Weber in 10 seconds due to the change in current in B. Then

Two coil A and B have coefficient of mutual inductance M=2H. The magnetic flux passing through coil A charges by 4 Weber in 10 seconds due to the change in current in B. Then

A circular coil of radius a and having N turns is placed at centre of a long solenoid, coaxially. The solenoid has radius b ( b gtgt a ) and number of turns per unit length is n. Their coefficient of mutual inductance will be -