The loop in Problem 10 moves away from the wire with a constant speed v. At time t = 0, the left side of the loop is a distance d from the long straight wire.

(a) Compute the emf in the loop by computing the motional emf in each segment of the loop that is parallel to the long wire. Explain why you can neglect the emf in the segments that are perpendicular to the wire.

(b) Compute the emf in the loop by first computing the flux through the loop as a function of time and then using E = -d?m/dt and compare your answer with that obtained in part (a).

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d a b