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A rectangular loop of length l (l>d) is being pulled at a constant speed v, through a region of certain thickness d, in which a uniform magnetic field B is set up. The graph between position x of the right-hand edge of the loop and the induced emf E will be

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Detailed Solution

As x increases so $\frac{dB}{dt}$ increases i.e. induced emf (e) is negative. When loop completely entered in the magnetic field, emf = 0
When it exit out x increases but $\frac{dB}{dt}$ decreases i.e. e is positive

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