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:ZR^{2}X^{2}The formula for impedance in a parallel R-C-L circuit is:ZR^{2}(X_{C}X_{L})^{2}The formulas for finding total current (I_{T}) in a parallel R-C-L circuit are:where I_{C} > I_{L} , I_{T}I^{2}_{R}(I_{C}I_{L})^{2}where I_{L} > I_{C} , I_{T}I^{2}_{R}(I_{L}I_{C})^{2}ES-08 Page 18 Rev. 0