Physics - Magnetism Question with Solution | TestHub

A conductor carrying current 60 A is in the form of a semicircle AB of radius R and lying in $xy$-plane with its centre ' $O$ ' at origin as shown in the figure. The magnitude of $\oint \bar{B}\cdot \overline{\mathrm{d}}\ell$ for the circle $x^2+z^2=3R^2$ in $xz$-plane due to current in curve $AB$ is $10n{\mu }_0$. Find the value of n ( n is an integer)