Parts a and b of the drawing show the same uniform and

Chapter , Problem 77

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Parts a and b of the drawing show the same uniform and constant (in time) magnetic fi eld B B directed perpendicularly into the paper over a rectangular region. Outside this region, there is no fi eld. Also shown is a rectangular coil (one turn), which lies in the plane of the paper. In part a the long side of the coil (length 5 L) is just at the edge of the fi eld region, while in part b the short side (width 5 W) is just at the edge. It is known that L/W 5 3.0. In both parts of the drawing the coil is pushed into the fi eld with the same velocity v B until it is completely within the fi eld region. The magnitude of the average emf induced in the coil in part a is 0.15 V. What is its magnitude in part b?