Inductance

In electrical engineering, inductance is the inductive reactance or inductive alternating current resistance .

Reactance of an inductance (component) with sinusoidal signals

The derivation of the following equations can be found under the keywords complex alternating current calculation and electrical resistance .

For an ideal coil with the inductance is its impedance ${\displaystyle L}$

${\displaystyle {\underline {Z}}_{L}=\mathrm {j} \omega L=\mathrm {j} X_{L}}$

where j is the imaginary unit.

Their reactance, also called inductance , is the imaginary part of the impedance:

${\displaystyle X_{L}=2\pi fL=\omega L}$

Their reactance is a linear alternating current resistance (independent of voltage or current strength) , but which increases with increasing frequency (or increasing angular frequency ). A calculation example of the inductive resistance is here to see. ${\displaystyle X_{L}}$ ${\displaystyle f}$ ${\displaystyle \omega =2\pi f}$

Note

The inductance is also a wrong value for use generic term for components such as coils and chokes that the physical property of inductance use. In parlance, these inductive components are also referred to as inductance , the term inductance standing for the physical property as well as being used for the inductive component.