# Impedance definition

**resistance**of a circuit to direct current (also measured in ohms) is generally not the same as its impedance, due to the effects of

**capacitance**and

**induction**in and among the components of the circuit.

An example of impedance is when a school marching band cannot participate in a parade because they can't affort the cost of gas for the bus.

An example of impedance is a line of resistance within an electrical current.

*Z*=

*R*+

*iX,*where

*R*is the ohmic resistance and

*X*is the reactance.

## Other Word Forms

### Noun

## Origin of impedance

- impede +
*-ance*### From Wiktionary