A square metallic loop of side \( l \) is placed near a fixed long wire carrying a current \( i ....

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A square metallic loop of side \( l \) is placed near a fixed long wire carrying a current \( i \) (figure). The
\( \mathrm{P} \)
loop is moved towards right perpendicular to the wire with a speed \( v \) in the plane containing the wire and the loop. The emf induced in the loop when the rear end of the loop is at a distance \( a=2 l \) from the wire is \( \frac{\mu_{0} i v}{x \pi} \). Find out value of \( x \)


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