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A straight wire of length pi//2 meter, i...

A straight wire of length `pi//2` meter, is bent into a circular shape. If the wire were to carry a current of `5A`, calculate the magnetic field, due to it, before bending, at a point distance `0*01` times the radius of the circle formed from it. Also calculate the magnetic field, at the centre of the circular loop formed, for the same value of current.

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