Physics - Magnetism Question with Solution | TestHub

An infinitely long wire, located on the $z$-axis, carries a current $I$ along the $+z$-direction and produces the magnetic field $\vec{B}$. The magnitude of the line integral $\int \vec{B}\cdot \overrightarrow{dl}$ along a straight line from the point $(-\sqrt{3}a,a,0)$ to $(a,a,0)$ is given by [ ${\mu }_0$ is the magnetic permeability of free space.]