Question

What should be the rate of variation of current in a circuit of self-inductance one Henry to generate induced e.m.f. equal to one volt?

• A. Less than one ampere per sec
• B. One ampere per sec
• C. Two ampere per sec
• D. More than two ampere per sec

Answer 1

The correct option is B

One ampere per sec

A coil will have an inductance value of one Henry when an emf of one volt is induced in the coil where the current flowing through the said coil changes at a rate of one ampere/second. In other words, a coil has an inductance (L) of one Henry (1H), when the current flowing through it changes at a rate of one ampere/second.