The current I through this RCL series circuit is related to the voltage V by

V = I Z where Z is the

total impedanceof the circuit. As with X_{C}and X_{L}, theimpedanceZ will depend upon the frequency of the AC voltage. The totalimpedanceZ is given byRemember, of course, that the reactances X

_{L}and X_{C}depend upon the frequency.

(c) Doug Davis, 2002; all rights reserved

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