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August 1, 2015

Homework Help: Physics - Electromagnetism

Posted by Robert on Sunday, August 12, 2012 at 11:52pm.

A square loop (length along one side = 20 cm) rotates in a constant magnetic field which has a magnitude of 2.0 T. At an instant when the angle between the field and the normal to the plane of the loop is equal to 20 and increasing at the rate of 10/s, what is the magnitude of the induced emf in the loop?

The answer is 4.8 mV, but I keep getting 2.7

I used E = NABwsin(wt)
Because we have no coil, we can take out N so that leave sus with BAwsin(wt)

What am I doing wrong?

THank you

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