Two very long, straight and insulated wires are kept at $90^o$ angle from each other In $xy -$ plane as shown in the figure. These wires carry current of equal magnitude $I$, whose directions are shown in the figure. The net magnetic field at point $P$ will be
JEE MAIN 2019, Medium
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Magnetic field at point $P$
$\overrightarrow{\mathrm{B}}_{\mathrm{net}}=\frac{\mu_{0} \mathrm{i}}{2 \pi \mathrm{d}}(-\hat{\mathrm{k}})+\frac{\mu_{0} \mathrm{i}}{2 \pi \mathrm{d}}(\hat{\mathrm{k}})=0$
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