physic

A long wire carrying a 6.0 A current perpendicular to the xy-plane intersects the x-axis at x=−2.0cm. A second, parallel wire carrying a 2.0 A current intersects the x-axis at x=+2.0cm. At what point on the x-axis is the magnetic field zero if the two currents are in the same direction?
At what point on the x-axis is the magnetic field zero if the two currents are in opposite directions?

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