Phasor analysis is a technique used in electrical engineering to simplify the analysis of alternating current (AC) circuits. It represents sinusoidal voltages and currents as rotating vectors, or phasors, in a complex plane. This method allows engineers to easily calculate circuit parameters like impedance and phase angles without dealing with the complexities of time-varying signals. By converting time-domain signals into the frequency domain, phasor analysis makes it easier to apply Ohm's Law and Kirchhoff's Laws. This approach is particularly useful for analyzing circuits with multiple sources and loads, as it streamlines calculations and enhances understanding of the circuit's behavior over time.