IMPEDANCE Basic AC Reactive ComponentsSummaryImpedance is summarized below.Impedance SummaryImpedance (Z) is the total opposition to current flow in an AC circuit.The formula for impedance in a series AC circuit is:ZR2X2The formula for impedance in a parallel R-C-L circuit is:ZR2(XCXL)2The formulas for finding total current (IT) in a parallel R-C-L circuit are:where IC > IL , ITI2R(ICIL)2where IL > IC , ITI2R(ILIC)2ES-08 Page 18 Rev. 0
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