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

The mutual inductance between two coils is 1.25 henry. If the current in the primary changes at the rate of 80 ampere//second , then the induced e.m.f. in the secondary is

The mutual inductance between two coils is 1.25 henry. If the current in the primary changes at the rate of 80 ampere//second , then the induced e.m.f. in the secondary is

If the coefficient of mutual induction of primary and secondary of an induction coil is 6 henry and a current of 5 ampere is cut off in 2xx10^-4 s, ind the induced e.m.f. in the secondary coil.

Alternating current of peak value ((2)/(pi)) ampere flows through the primary coil of the transformer. The coefficient of mutual inductance between primary and secondary coil is 1 henry. The peak e.m.f. induced in secondary coil is (Frequency of AC= 50 Hz)

Alternating current of peak value ((2)/(pi)) ampere flows through the primary coil of the transformer. The coefficient of mutual inductance between primary and secondary coil is 1 henry. The peak e.m.f. induced in secondary coil is (Frequency of AC= 50 Hz)

The coefficient of mutual inductance between the primary and secondary of the coil is 5H .A current of 10 A is cut - off in 0.5 s . The induced emf is :

The coefficient of mutual inductance between the primary and secondary of the coil is 5H .A current of 10 A is cut - off in 0.5 s . The induced emf is :

If the coefficient of mutual induction of the primary and secondary coils of an induction coil is 6 H and a current of 5A is cut off in 1//5000 second, calculate the induced emf in the secondary coil.

If the rate of change of current in primary coil is doubled,the induced e.m.f. in secondary coil will become