Electrical conductance is the reciprocal of electrical resistance. It is a measure of how easily electricity flows along a certain path through an object. The SI derived unit of conductance is the siemens (symbol S, equal to 1/Ω; alias the "mho"). Oliver Heaviside coined the term in September 1885.

Electrical conductance should not be confused with conduction, which is the mechanism by which charge flows, or with conductivity, which is a property of a material.

Relation to other quantities

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Conductance is related to susceptance and admittance by the equation:

$Y\; =\; G\; +\; i\; B\; \backslash ,$

where:

• Y is the admittance, measured in siemens
• G is the conductance, measured in siemens
• $i$ is the imaginary unit
• B is the susceptance, measured in siemens

The magnitude of admittance is given by:

$\backslash left\; |\; Y\; \backslash right\; |\; =\; \backslash sqrt\; \{G^2\; +\; B^2\}$

See also

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SI electromagnetism units

External links

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• Conductance, Susceptance, and Admittance

Physical quantity | Electricity

Електричeска проводимост | Elektrischer Leitwert | konduktanssi | Conducibilità elettrica | コンダクタンス | Condutância elétrica | Elektrická vodivosť | konduktanca | 电导