Question

A wire of length l, mass m and resistance R slides without any friction down the parallel conducting rails of negligible resistance (Fig 3.126). The rails are connected to each other at the bottom by a resistanceless rail parallel to the wire so that the wire and the rails form a closed rectangular conducting loop. The plane of the rails makes an angle with the horizontal and a uniform vertical magnetic field of induction B exist throughout the region. Find the steady-state velocity of the wire.

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A

B

C

D

Medium

Solution

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A



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