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- Thread starter Neha98
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PF rules want you to show a bit more: equations, and an attempt at solution. To get started:

In general you have something like ##\Phi = A B N \cos(\theta) =A B N \cos(\omega t) ## with ##\Phi## the flux, A area, B magnetic field, N number of turns and the angle ##\theta## between the perpendicular to the area and the magnetic field ##\vec B## varies with time as ##\omega t##. ##\omega## is the angular speed.

The rate of change is ##{d\Phi\over dt}## and I expect you can do the differentiation and find when it gives zero ?

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