Question 209: Magnetism and Matter

Question

Two very long, straight, and insulated wires are
kept at 90° 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 :
![](https://imagex.cdn.examgoal.net/18hoxe66ijw964bcq/fe4f81c4-935f-410b-9a19-9b98305f2c10/f36d9da0-8207-11e9-8081-1d558b7f1d26/file-18hoxe66ijw964bcr.png)

Accepted Answer

Magnetic field at point P
${\overrightarrow B _{net}} = {{{\mu _0}i} \over {2\pi d}}( - \widehat k) + {{{\mu _0}i} \over {2\pi d}}(\widehat k) = 0$

Answer

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

Answer

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

Answer

Zero

Answer

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

Magnetism and Matter

Two very long, straight, and insulated wires are kept at 90° 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 :

Choose the correct answer: