When a rate of change of current in a circuit is unity, the induced emf is equal to

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

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

As shown in the figure when the key is pressed,rate of change of current in the circuit is 200A/sec . current in the circuit a this situation is

As shown in the figure when the key is pressed,rate of change of current in the circuit is 200 A/sec. current in the circuit a this situation is

In a coil of self-induction 5 H, the rate of change of current is 2 A s^-1 . Then, e.m.f. induced in the coil is

When is current induced in a circuit ?

When is emf induced in a circuit ?