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A circular loop of radius 10 cm lies in the plane of the paper. A constant magnetic field of 250 mT is directed into the paper. Find the magnetic flux through the loop. (b) Same geometry as above but now the magnetic field decreases uniformly from 250 mT to zero in 0.5 s. Find the induced emf and the polarity of the induced current. (c) The circular loop is a copper wire of resistance 0.1 Ω. Draw the graph of current versus time

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