A long, straight wire is in the plane of the page and carries a current of 5 A.

Question

A long, straight wire is in the plane of the page and carries a current of 5 A. Point P is also in the plane of the page and is a perpendicular distance 0.1 m from the wire, as shown below. With reference to the coordinate system in the figure above, what is the direction of the magnetic field at point P due to the current in the wire? The permeability of free space is 4 pi times 10-7 T m/A. Gravitational effects are negligible. in the positive x direction in the positive y direction in the positive z direction in the negative x direction in the negative z direction in the negative y direction

Explanation / Answer

2. in the positive y direction

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