The **electrical conductance** of a component in an electric circuit is a property of a component that describes how the electric current in the component is related to the electrical potential difference (voltage) across it. The greater the electrical conductance, the larger the current for a given potential difference, and the smaller the potential difference, for a given current.

Conductance is the inverse physical quantity to electric resistance, which is measured in siemens (symbol S) in honor of Werner Von Siemens (1816-1892) German technician and industrialist, founder together with his brothers of the electrotechnical company Siemens.

\[G=\dfrac{1}{R}=\dfrac{I}{\Delta V}\]

A high value of *G* is indicative of a small value of *R*.

Electrical conductance is closely related to electrical conductivity. Electrical conductance is a property of a particular electrical component (such as a conducting wire), while conductivity is a property of the material itself (such as silver or copper).