The following figure shows a straight wire of length a carrying a current I. The magnitude of magnet

Question

The following figure shows a straight wire of length a carrying a current I. The magnitude of magnetic field induction produced by the current at P , which is lying at a perpendicular distance ' $a$ ' from one end of the wire is\

Professor PC Thomas Classes · Answer

$\mathrm{B}=\frac{\mu_{0} \mathrm{I}}{4 \pi \mathrm{a}}\left[\sin \phi_{1}+\sin \phi_{2}ight]$\ $\phi_{1}=45^{\circ}, \phi_{2}=0$