In electrical engineering, the input impedance of an electrical network is the measure of the opposition to current (impedance), both static (resistance) and dynamic (reactance), into a load network or circuit that is external to the electrical source network. The input admittance (the reciprocal of impedance) is a measure of the load network's propensity to draw current.
In electrical engineering, the input impedance of an electrical network is the measure of the opposition to current (impedance), both static (resistance) and dynamic (reactance), into a load network or circuit that is external to the electrical source network. The input admittance (the reciprocal of impedance) is a measure of the load network's propensity to draw current.
Source: Wikipedia "Input impedance" · CC BY-SA 4.0
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