- #1
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Homework Statement
A square circuit with side L lies in the x-y plane, is centred on the origin and has sides parallel to the x and y axes. At time t=0 it starts turning about the x axis, in a region characterised by a uniform magnetic field B parallel to z, with uniform angular speed omega. By considering the angle between the surface normal and the field, calculate the potential difference (electromotive force) induced in the circuit as a function of time.
Homework Equations
phi(subscript B)=BA cos theta
potential difference=-d(phi (subscript b))/dt
The Attempt at a Solution
potential difference=-d(BA cos theta)/dt
this isn't leading anywhere. I don't know how to differentiate it with respect to t