Question

Two wires lie perpendicular to the plane of the paper....


image.pngTwo wires lie perpendicular to the plane of the paper, and equal electric currents pass through the paper in the directions shown. Point P is equidistant from the two wires.

a) Construct a vector diagram showing the direction of the resultant magnetic field at point P due to currents in these two wires. Explain your reasoning.
b) If the currents in both wires were instead directed into the plane of the page (such that the current moved away from us), show the resultant magnetic field at point P.

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Answer #1

The vector diagram for the net magnetic field at the point P is drawn below Use the right hand thumb nule. Put the thumb in the direction of the curent and the curling of the fingers gives the direction of the magnetic field at that point. 2B C)

If the direction of the current is same direction out of the plane. Then the resultant magnetic field will be zero.

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