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Asked in GSEB Board March 2016 · Phase relationships and phasors
A phasor represents a sinusoidal quantity such as v=V₀ sin ω t.
It is a vector of length V₀ that rotates anticlockwise about the origin with angular speed ω.
Its projection on the vertical axis at time t is V₀ sin ω t, the instantaneous value.
The angle between two phasors gives the phase difference between the quantities they represent.
So a phasor is a rotating vector.
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