When Does the Rate of Change of Magnetic Flux Equal Zero?

[Neha98]

When does the rate of change of magnetic flux in linkage with a coil rotating in a uniform magnetic field equal zero?

 

[BvU]

Hello Neha,

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 ?