 # what is electrical impedance

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Electrical impedance Electrical impedance is the measure of the opposition that a circuit presents to a current when a voltage is applied. The term complex impedance may be used interchangeably. What is impedance in electric circuits and what is its ... What is meant by this is that impedance includes both resistance (the opposition of the electric current that causes heat) and reactance (the measure of such an opposition as the current alternates) in detailing the opposition against electric currents. In direct currents (DC), electrical impedance is the same as resistance, but this does not hold true in AC circuits. What is Electrical Impedance? | EAGLE | Blog Electrical impedance is just a form of resistance that depends on frequency. That’s it. You could walk away right now and add one more word to your electrical engineering vocabulary. Electrical impedance | physics | Britannica Electrical impedance, measure of the total opposition that a circuit or a part of a circuit presents to electric current. Impedance includes both resistance and reactance (qq.v.). The resistance component arises from collisions of the current carrying charged particles with the internal structure of the conductor. What is impedance? Definition from WhatIs Impedance, denoted Z, is an expression of the opposition that an electronic component, circuit, or system offers to alternating and or direct electric current.Impedance is a vector (two dimensional)quantity consisting of two independent scalar (one dimensional) phenomena: resistance and reactance. What is Impedance? (with pictures) wisegeek In electrical engineering, impedance is a measure of the extent to which a circuit opposes the flow of electricity. All materials have some degree of electrical resistance, which causes some energy to be lost as heat, and reduces the flow of current.