# NEET Physics Moving Charges and Magnetism Questions Solved

Two straight long conductors AOB and COD are perpendicular to each other and carry currents ${\mathrm{i}}_{1}$ and ${\mathrm{i}}_{2}$ . The magnitude of the magnetic induction at a point P at a distance a from the point O in a direction perpendicular to the plane ACBD is

(a) $\frac{{\mathrm{\mu }}_{0}}{2\mathrm{\pi a}}\left({\mathrm{i}}_{1}+{\mathrm{i}}_{2}\right)$                    (b) $\frac{{\mathrm{\mu }}_{0}}{2\mathrm{\pi a}}\left({\mathrm{i}}_{1}-{\mathrm{i}}_{2}\right)$

(c) $\frac{{\mathrm{\mu }}_{0}}{2\mathrm{\pi a}}{\left({\mathrm{i}}_{1}^{2}+{\mathrm{i}}_{2}^{2}\right)}^{1/2}$                (d) $\frac{{\mathrm{\mu }}_{0}}{2\mathrm{\pi a}}\frac{{\mathrm{i}}_{1}{\mathrm{i}}_{2}}{\left({\mathrm{i}}_{1}+{\mathrm{i}}_{2}\right)}$

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