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A rectangular loop of length 'l' and bre...

A rectangular loop of length `'l'` and breadth `'b'` is placed at a distance of `x` from an infinitely long wire carrying current `'i'` such that the direction of current is parallel to breadth. If the loop moves away from the current wire in a direction perpendicular to it with a velocity `'v'`, the magnitude of the e.m.f. in the loop is: (`mu_(0)=` permeability of free space)

Text Solution

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`emf -Blv= Bbv =(B_1-B_2)bv`
`=[(mu_0i)/(2pix)-(mu_0i)/(2pi(x+l))]bv,=(mu_0ibv)/(2pi)[1/x-1/(l+x)]`
`= (mu_0ilbv)/(2pix(x+l))`
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