出典:Wikipedia
出典:『Wikipedia』 (2011/05/29 17:08 UTC 版)
Reactance is the opposition of a circuit element to a change of electric current or voltage, due to element's capacitance or inductance. A built-up electric field resists the change of voltage on the element, while a magnetic field resists the change of current. Notion of reactance is similar to electrical resistance, but it differs from it in several aspects.