Question

Q.41 A Vertical ring of radius r and resistance R falls vertically.
it is in contact with two vertical rails which are joined at
the top. The rails are without friction and resistance.
There is a horizontal uniform magnetic field of magnitude
B perpendicular to the plane of the ring and the rails.
When the speed of the ring is v, the current in the top
horizontal of the rail section is​

Answer 1

Answer:

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