In a simple resistor circuit, we defined resistance R by

V = I R In a similar fashion, we can write

V _{L}= I X_{L}where V

_{L}is the maximum voltage across the inductor and I is the maximum current through the circuit. X_{L}is called the "inductive reactance"; it is analogous to resistance and is also measured in ohms (). The inductive reactance is given by

(c) Doug Davis, 2002; all rights reserved

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