Complex numbers are useful in ac circuits when the reactance of X_L or X_C makes it necessary to consider the phase angle.

Name: Complex numbers are useful in ac circuits when the reactance of X L or X C makes it necessary to consider the phase angle.
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Question

Quizplus · Accepted Answer

Complex numbers are used in AC circuits to account for the phase difference between voltage and current, especially when dealing with inductive (XL) or capacitive (XC) reactance, as they allow for the representation of both magnitude and phase angle.

Complex Numbers Are Useful in Ac Circuits When the Reactance