A rod of length `l` is rotating with an angular speed `omega` about its one end which is at a distance `a` from an infinitely long wire carrying current `i`.Find the `emf` induced in the rod at the instant shown in the figure.

Explanation

Consider a small segment of rod of length `dx`,at a distance `x` from one end of the rod.`Emf` induced in the segment
`dE=(mu_(0)i)/(2pi(x+a))(xomega)dx`
`thereforeE=underset(0)overset(l)int (mu_(0)i)/(2pi(x+a))(xomega)dx=(mu_(0)iomega)/(2pi)[l-aln((l+a)/a)]`