Conductance
In the field of electricity, conductance (symbol G) refers to the ease that a material offers to the passage of electric current, that is, that the conductance is the inverse property of electrical resistance. It is measured in siemens (S).
Not to be confused with conduction, which is the mechanism by which charges flow, or with conductivity, which is the specific conductance of a material.
This parameter is especially useful when dealing with very small resistance values, as is the case with electrical conductors.
Relationship with other magnitudes
As already mentioned, the relationship between conductance and resistance is given by:
- G=1R=IV{displaystyle G={frac {1}{R}}}={frac {I}{V}},}
where:
- G is behavior (it comes from English gate),
- R is resistance in ohmos,
- I It's the current in amperes,
- V It's volt voltage.
(Note: this relationship is only applicable in the case of purely resistive circuits.)
For the reactive case, conductance can be related to susceptance and admittance by the following equation:
- And=G+jB{displaystyle Y=G+jB,}
or by:
- G=Re(And){displaystyle G=mathrm {Re} (Y),}
where
- And It's the admission,
- j{displaystyle j} It's imaginary unity,
- B It's susceptance.
