electrical impedance

- Its
__symbol__is, and it is expressed in ohms. The total opposition a*Z*__circuit__or__device__offers to the flow of__AC__. It is a__complex quantity__, whose__real number__component is resistance, and whose imaginary number component is reactance. Its formula is:, in which*Z = R +jX*is the impedance,*Z*is the resistance,*R*is the reactance, and*X*is the square*j*__root__of -1. That is,*J*^{2}=-1. Also called electric impedance, or impedance. - synonym electric impedance

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