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Identify the function of a phasor from the following.

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in Physics – Class 12 by (135k points)
Identify the function of a phasor from the following.

(a) Phasor is a vector quantity used to represent a sinusoidal signal

(b) Phasor is a scalar quantity used to represent a sinusoidal signal

(c) Phasor is a vector quantity used to represent a cosine signal

(d) Phasor is a scalar quantity used to represent a cosine signal

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I need to ask this question from Representation of AC Current and Voltage by Rotating Vectors topic in section Alternating Current of Physics – Class 12

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Right choice is (a) Phasor is a vector quantity used to represent a sinusoidal signal

Easy explanation: Phasor is a vector quantity used to represent a sinusoidal signal. The vertical component of phasors represents the quantities that are sinusoidally varying for a given equation. The magnitude of the phasors represents the peak value of the voltage and the current.

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