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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.


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


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:

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


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.