A straight wire carrying a current of `12A` is bent into a semicircular arc of radius `2*0cm`
Channel: Doubtnut
Date: 2020-08-02

A straight wire carrying a current of `12A` is bent into a semicircular arc of radius `2*0cm` as shown in figure. Consider the magnetic field `vecB` at the centre of arc.  (a) What is the magnetic field due to the staight segments?  (b) In what way the contribution to `vecB` from the semicircle differs from that of a circular loop and in what way does it resemble?  (c) Would your answer be different if the wire were bent into a semicircle arc of the same radius but in the opposite way as shown in figure