Question

if sin wave starts at zero does it mean phase angle is always zero
or When Vo=0 then phase angle is zero?

in a problem Vo was not zero and the phase angle was zero by looking sin wave graph
I didn't understand

Answer 1

Phase angle is the angle between two waves at t = 0 .

If the wave is of the form of Sine function which begins from 0 at t = 0 then the phase angle is 0 degree.

On the other hand if it is a cosine function then the phase angle between two waves is 90° .

Therefore, to check the phase angle , we need to find the difference in initial angle.

Or in another method, we can find phase angle by = 2π∆x/

Where ∆x is the path difference between the waves .

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