The long, straight wire shown in Fig. 29.51a carries constant current 1. A metal bar with length L is moving at constant velocity V, as shown in the figure. Point a is a distance d from the wire.(a) Calculate the emf induced in the bar.(b) Which point, a or b, is at higher potential?(c) If the bar is replaced by a rectangular wire loop of resistance R (Fig. 29.51b), what is the magnitude of the current induced in theloop?

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(a) L b 15 (b) L Kw