# complex impedance

## Definition

### Electronics

- The expressing of an electrical impedance incorporating both its real number and imaginary number components. Its
__formula__is:, in which*Z = R + jX*is the impedance,*Z*is the resistance,*R*is the reactance, and*X*is the*j*__square__root of -1. That is,*j*^{2}= -1.is expressed in ohms.*Z*