What are phasors?

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(A) phasor is a rotating vector that represents a sinusoidal alternating quantity (like voltage or current) in the complex plane.It has a length equal

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Rotating vectors that represent sinusoidal alternating quantities.

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(A) phasor is a rotating vector that represents a sinusoidal alternating quantity (like voltage or current) in the complex plane.It has a length equal to the amplitude of the quantity and rotates at an angular frequency $\omega$ equal to the angular frequency of the alternating quantity.The projection of the phasor on the vertical axis represents the instantaneous value of the quantity at any time $t$.

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