When current in a coil changes with time, how is the back e.m.f. induced in the coil related to it ?

Whenever current in a coil is changed, an e.m.f. is induced in the same coil. This property of coil is due to ___________.

When current in a coil changes to $2$ ampere from $8$ ampere in $3\times {10}^{-3}$, the e.m.f. induced in the coil is $2$ volt. The self-inductance of the coil in millihenry is

When the current in a coil changes from 2A to 4A in 0.05 sec, the e.m.f. developed in the coil is 8V. The coefficent of self induction of the coil is

The current in a coil decreases from 5 A to 0 in 0.1 sec. If the average e.m.f induced in the coil is 50 V, then the self inductance of the coil is

A varying current in a coil change from $10A$ to $0A$ in $0.5\sec$. If the average emf induced in the coil is $220V$, the self inductance of the coil is

The mutual inductance between two coils is $0.5H$.It the current in one coil is changed at the rate of $5A/s$,what will be the $emf$ induced in the other coil?

The mutual inductance between two coils is 3 H. If the current in one coil is changed at a rate of $5A/s$, what will be the emf induced in the other coil?

The mutual inductance between two coils is 2.5 H. If the current in one coil is changed at the rate of 1 As^(-1), what will be the emf induced in the other coil?

The current in a coil changes from $4$ ampere to zero in $0.1s$. If the average e.m.f. induced is $100vo<$, what is the self-inductance of the coil?

At which position of the plane of the rotating coil with the direction of magnetic field the e.m.f induced in the coil is maximum ?