Basic AC Reactive Components IMPEDANCEIMPEDANCEWhenever inductive and capacitive components are used in an ACcircuit, the calculation of their effects on the flow of current isimportant.EO 1.9 DEFINE impedance (Z).EO 1.10 Given the values for resistance (R) and inductance (L)and a simple R-L series AC circuit, CALCULATE theimpedance (Z) for that circuit.EO 1.11 Given the values for resistance (R) and capacitance (C)and a simple R-C series AC circuit, CALCULATE theimpedance (Z) for that circuit.EO 1.12 Given a simple R-C-L series AC circuit and the valuesfor resistance (R), inductive reactance (XL), andcapacitive reactance (XC), CALCULATE the impedance(Z) for that circuit.EO 1.13 STATE the formula for calculating total current (IT) ina simple parallel R-C-L AC circuit.EO 1.14 Given a simple R-C-L parallel AC circuit and the valuesfor voltage (VT), resistance (R), inductive reactance (XL),and capacitive reactance (XC), CALCULATE theimpedance (Z) for that circuit.ImpedanceNo circuit is without some resistance, whether desired or not. Resistive and reactive componentsin an AC circuit oppose current flow. The total opposition to current flow in a circuit dependson its resistance, its reactance, and the phase relationships between them. Impedanceis definedas the total opposition to current flow in a circuit. Equation (8-6) is the mathematicalrepresentation for the magnitude of impedance in an AC circuit.(8-6)ZR2X2Rev. 0 Page 9 ES-08
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