Question

What is the S.I. unit for self induction?

Answer 1

The S.I. unit for self-induction is the henry (H). One henry is defined as the amount of inductance required to induce an electromotive force (EMF) of one volt when the current through the inductor changes at a rate of one ampere per second.

Answer 2

The SI unit for self-induction is the **henry** (symbol: **H**). Self-induction is a property of an electrical circuit or component (such as an inductor) that describes how much voltage is induced in the circuit when the current through it changes. One henry is defined as the amount of inductance required to induce a voltage of one volt when the current changes at a rate of one ampere per second.

In mathematical terms, if \( L \) is the self-inductance in henries, \( V \) is the induced voltage in volts, and \( \frac{dI}{dt} \) is the rate of change of current in amperes per second, then:

\[ V = -L \frac{dI}{dt} \]

The negative sign indicates that the induced voltage opposes the change in current, as per Lenz's Law.