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A 40-turn col has a diameter of 13 cm. The col is placed in a spatially uniform magnetic field of magnitude 0.40 T so that the face of the coil and the magnetic field are perpendicular. Find the magnitude of the emf induced in the coll (in V) if the magnetic field is reduced to
zero uniformly in the following times.
(a) 0.50 s
(b) 5.0 s
(c) 65 s

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