Two very long, straight, and insulated wires are kept at 90Â° angle from each other in xy-plane as shown in the figure. These wires carry currents of equal magnitude I, whose directions are shown in the figure. The net magnetic field at point P will be :

Question

${{ + {\mu _0}I} \over {\pi d}}\left( {\mathop z\limits^ \wedge } \right)$

$ - {{{\mu _0}I} \over {2\pi d}}\left( {\mathop x\limits^ \wedge + \mathop y\limits^ \wedge } \right)$

Zero

$ {{{\mu _0}I} \over {2\pi d}}\left( {\mathop x\limits^ \wedge + \mathop y\limits^ \wedge } \right)$

Solution

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