Induced emf and self inductance

In a coil current falls from 5 A to 0 A in 0.2 s. If an average emf of 150 V is induced, then the self inductance of the coil is

At a given instant the current and self-induced emf in an inductor are directed as indicated in Fig. 30-51. (a) ls the current increasing or decreasing? (b) The induced emf is 23 V, and the rate of change of the current is 18 kA/s, find the inductance.

The current in ampere through an inductor is i(10+20t) Here t is in second. The induced emf in the inductor 4V. The self inductance of the indicator is, L…..H,

What should be the rate of variation of current in self inductance 1H to generate induced emf equal to 1V?

In an inductor, the current / varies with time to l = 5A + 16.(A//s)t . If-induced emf in the induct is 5 mV, the self inductance of the inductor is

When current flowing in a coil changes from 3A to 2A in one millisecond, 5 volt emf is induced in it. The self-inductance of the coil will be-

If a rate of change of current of 4 As^(-1) induces an emf of 20 mV in a solenoid, the self inductance of the solenoid is