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A current is flowing in a circular conto...

A current is flowing in a circular contour 1 whoso radius is R. A. second contour, 2, whose radius is much srnaller than that of the first, is moving with a consl ant velocity v along the r axis in such a manner that the planes of the contours remain parallel to each other in the course of the motion. At what distance from contour 1 will the emf induced in contour 2 be maximal?

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