The capacitive reactance, the inductive reactance, and the resistance of the circuit can be combined to give the impedance ZZZ of the circuit. The impedance is a measure of the total reactance and resistance of the circuit and is similar to the equivalent resistance that can be found from various resistors in a dc circuit. Because vLvLv_L and vCvCv_C do not reach maximum values at the same time as iii, the impedance is not found by adding RRR, XLXLX_L, and XCXCX_C. Instead, the impedance is found using.