conductance
Conductance
the ability of a system to conduct electricity, measured by the ratio of the current flowing through the system to the potential difference across it; the reciprocal of resistance. It is measured in reciprocal ohms, mhos, or siemens.
Conductance
The real part of the admittance of an alternating-current circuit. The admittance Y of an alternating-current circuit is a complex number given by Eq. (1). (1) 
The real part G is the conductance. The units of conductance, like those of admittance, are called siemens or mhos. Conductance is a positive quantity. The conductance of a resistor R is given by Eq. (2). (2) 
In general the conductance of a circuit may depend on the capacitors and inductors in the circuit as well as on the resistors. For example, the circuit in the illustration has impedance at frequency &ohgr; given by Eq. (3) and admittance given by Eq. (4), so that the conductance, given by
(3) 
(4) 
(5) 
Eq. (5), depends on the inductance L as well as the resistance R. See Admittance, Electrical impedance )
Circuit with a resistor and inductor in series
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