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OpenStudy (anonymous):
This is a question about electro-magnetic induction. If i have a magnet turning about its center(The point between the two poles)and a soft iron placed above and below it that can concentrate its lines of magnetic field. A coil is wrapped around the iron and is connected to a voltmeter. What would the graph of induced e.m.f against time look like?
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OpenStudy (anonymous):
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