A current I flows along an infinitely long straight conductor. if $r$ is the perpendicular distance

Question

A current I flows along an infinitely long straight conductor. if $r$ is the perpendicular distance of a point from the wire, then the magnetic induction $B$ varies with $r$ as\

Professor PC Thomas Classes · Answer

$\mathrm{B}=\frac{\mu_{0} \mathrm{I}}{2 \pi \mathrm{r}}$