Q. A uniform magnetic field B is confined to the square region with side of length 2L. A square loop of wire with side of length L is moving throughout a region at a constant speed v. let t=0 be the time at which loop first encounters the magnetic field. The resistance of the loop is R. plot a graph of the induced emf in the wire vs. time graph with an appropriate values of E and t in th terms of L, v, and B.