Before applying the method of phasor algebra for solving parallel AC circuits, let us have an idea of important topics of phasor algebra. A technique, developed by engineers, to represent a phasor in an algebraic (i.e., mathematical) form is known as phasor algebra or complex algebra.
This technique has provided a relatively simple but powerful tool for obtaining quick solution of AC circuits. It simplifies the mathematical manipulation of phasors to a great extent.

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