susceptance

electronics

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July 14, 2026

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Susceptance is a term used in electronics to describe a component of alternating-current (AC) circuits. It is defined as the ratio of the effective current to the effective electromotive force, multiplied by the sine of the phase difference between them.1

Susceptance is the reciprocal of reactance, which is the opposition a circuit presents to a varying or alternating electric current. Reactance can be either inductive or capacitive. Inductive reactance opposes changes in current, while capacitive reactance opposes changes in voltage.2

The unit for susceptance is the reciprocal ohm, also known as the mho.2

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reactance
…reactance, 1/X, is called the susceptance and is expressed in units of reciprocal ohm, called mho (ohm spelled backward).
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…reactance, 1/X, is called the susceptance and is expressed in units of reciprocal ohm, called mho (ohm spelled backward).
Read More