impedance
(மின்) மாற்று மின்னோட்டத்துக்கு ஏற்படும் புறத்தோற்றத்தடை.
Im*ped"ance, n. [Impede + -ance.] (Elec.) Defn: The apparent resistance in an electric circuit to the flow of an alternating current, analogous to the actual electrical resistance to a direct current, being the ratio of electromotive force to the current. It is equal to R2 + X2, where R = ohmic resistance, X = reactance. For an inductive circuit, X = 2pfL, where f = frequency and L = self-inductance; for a circuit with capacity X = 1 ÷ 2pfC, where C = capacity.