A straight wire of length `pi//2` meter, is bent into a circular shape. If the wire were to carry a
Channel: Doubtnut
Date: 2020-08-02

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.