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Magnetic flux and induced emf

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A uniform magnetic field B = 0.5 T exists in a circular region of radius R = 5 m. A loop of radius R = 5 m encloses the magnetic field at t = 0 and then pulled at uniform speed v = 2 ms-1 in the plane of the paper. Find the induced emf (in V) in the loop at time t = 3 s.




so E=Bvl=Bv4R2-v2t2

given R=5m, v=2m/s, t = 3s


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