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A square loop of wire of edge a carries ...

A square loop of wire of edge a carries a current `i`.
Magnetic induction `B` for a point on the axis of the loop at a distance `x=a/sqrt2` from its centre is `(Nmu_(0)i)/(3pia)`,then find value of `N B=(4mu_(0)ia^(2))/(pi(4x^(2)+a^(2))(4x^(2)+2a^(2))^(1//2))`

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MOTION-MAGNETISM -EXERCISE-3 (Level-II)
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