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Unformatted text preview: In the figure shown the loop is being pulled to the right at a constant speed v . A constant current I flows in the long wire, in the direction shown. a ) Calculate the magnitude of the net emf induced in the loop . Do this two ways: ( i ) using Faradays law of induction and ( ii ) by looking at the emf induced in each segment of the loop due to its motion. b ) Find the direction clockwise or counterclockwise of the current induced in the loop. Do this two ways: using Lenz Law, using the magnetic force acting on the charges in the loop First of all note current I produces a magnetic B field in circular loops the penetrate the wire loop. Note that the area remains constant but the B field changes because the loop is moving away from the wire. Because the B field is smaller further from the wire, this means the flux changes (gets smaller) since B = B A and B is getting smaller in time ....
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