Admittance

Admittance, in electrical engineering, refers to a measure of how easily a circuit or component allows the flow of alternating current (AC) when a voltage is applied. It is the reciprocal of impedance (Z) and is a complex quantity, encompassing both conductance (G) and susceptance (B). Mathematically, admittance (Y) is expressed as: \[ Y = \frac{1}{Z} \] where \( Z \) is the impedance of the circuit.