- a vector that represents a sinusoidally varying quantity, as a current or voltage, by means of a line rotating about a point in a plane, the magnitude of the quantity being proportional to the length of the line and the phase of the quantity being equal to the angle between the line and a reference line.
Origin of phasor
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- electrical engineering a rotating vector representing a quantity, such as an alternating current or voltage, that varies sinusoidally
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