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A rod of length L and resistance r rotat...

A rod of length `L` and resistance `r` rotates about one end as shown in . Its other end touches a conducting ring of negligible resistence. A resistence `R` is connected between the center and periphery. Draw the electrical equivalence and find the current in resistance `R`. There is a uniform magnetic field `B` directed as shown in .

Text Solution

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current i`=((1)/(2)B omega l^(2))/(R+r)`
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