# Definition:Inductance

## Definition

Inductance is the property of an electrical conductor by which a change in electric current through it induces an electromotive force in both the conductor itself and also in any nearby conductors.

### Symbol

The usual symbol used to denote inductance is $L$.

### Dimension

The dimension of measurement of inductance is $\mathsf {M L^2 T^{-2} I^{-2} }$.

This arises from its definition as magnetic flux per unit current:

$\dfrac {\mathsf {M L^2 T^{-2} I^{-1} } } {\mathsf I}$

### Unit

The SI unit of inductance is the henry $\mathrm H$: $1 \, \mathrm H = 1 \, \mathrm {Wb} \, \mathrm A^{-1}$

In the CGS unrationalised electromagnetic system, the base unit of inductance is the abhenry $\mathrm {abH}$.

### Conversion Factors

 $\ds$ $=$ $\ds 1$ henry $\ds \text {corresponds to}$  $\ds 10^9$ abhenry (or e.m.u. of inductance) $\ds \text {corresponds to (approximately)}$  $\ds \dfrac 1 9 \times 10^{-11}$ e.s.u. of inductance

## Also see

• Results about inductance can be found here.