![]() Like conductance, it used to be measured in the unit of mhos, but now is measured in Siemens. Mathematically, it is equal to 1/X, the reciprocal of reactance. We call this time-based opposition, reactance, and like resistance we also measure it in the unit of ohms.Īs conductance is the complement of resistance, there is also a complementary expression of reactance, called susceptance. Reactive components such as inductors and capacitors oppose the flow of electrons with respect to time, rather than with a constant, unchanging friction as resistors do. Mathematically, conductance is the reciprocal of resistance, and each 1/R term in the “parallel resistance formula” is actually a conductance. Unlike resistance, which diminishes as more parallel components are included in the circuit, conductance simply adds. It is a useful term when exploring the mathematical formula for parallel resistances: R parallel = 1 / (1/R 1 + 1/R 2 +. ![]() In the study of DC circuits, the student of electricity comes across a term meaning the opposite of resistance: conductance. ![]()
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