Physics-
General
Easy
Question
A wire cd of length l and mass m is sliding without friction on conducting rails ax and by as shown. The vertical rails are connected to each other with a resistance R between a and b. A uniform magnetic field B is applied perpendicular to the plane abcd such that cd moves with a constant velocity of
The correct answer is:
Due to magnetic field, wire will experience an upward force 
If wire slides down with constant velocity then
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