•In a circuit that contains both inductance and capacitance, one cancels the other out
•The combined effect of resistance, inductive reactance
and capacitive reactance is referred to as impedance
(Z) of the circuit
•Impedance is not the sum of resistance and
reactance
•z=(R2+(Xl-Xc)2)½ (Xl = inductive
reactance, Xc = capacitive reactance)