# Inductive Reactance

MathML formulaFormula ImageStraight text formula
$X L = 2πfL$ XL = 2πfL

Where:

XL = inductive reactance, Ohms

f = frequency, Hertz

L = inductance, Henrys

Reactance, XL =

## Inductors - Complex Impedance

When working with circuits that contain combinations of ideal capacitances, inductances and resistance, it is more correct to deal with inductance in terms of a "complex impedance". In this form, components have a combination of a "real" resistance part, and an "imaginary" reactance part. The pure inductor, of course, has a zero real part (it doesn't have resistance) but a positive imaginary part.

MathML formulaFormula ImageStraight text formula
$X L = jωL = j2πfL$ XL = jωL = j2πfL

Where:

j = √-1

XL = inductive reactance, Ohms

ω = angular frequency, radians per second

f = frequency, Hertz

L = inductance, Henrys