Look up impedance in Wiktionary, the free dictionary.
Impedance is the complex-valued generalization of resistance. It may refer to:
Acoustic impedance, a constant related to the propagation of sound waves in an acoustic medium
Electrical impedance, the ratio of the voltage phasor to the electric current phasor, a measure of the opposition to time-varying electric current in an electric circuit
High impedance, when only a small amount of current is allowed through
This disambiguation page lists articles associated with the title Impedance. If an internal link led you here, you may wish to change the link to point directly to the intended article.