a metal rod of resistance R along diameter of conducting ring having radius r . There is a magnetic field of magnitude B perpendicular to the planeof the loop . The ring spins with angular speed omega about it's axis . The center of thw ring ia joined to its rim by an external wire W. The wire W have no resistance . The current in W is......
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Answer: 2Br2ω/R
Explanation:i=eR/4
=4e/R
=4.12Bωr2/R
=2Bωr2/R
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