Along wire carrying a 6.0 a current perpendicular to the xy-plane intersects the x-axis at x=−2.3cm. a second, parallel wire carrying a 3.0 a current intersects the x-axis at x=+2.3cm. (part a) at what point on the x-axis is the magnetic field zero if the two currents are in the same direction? (part b) at what point on the x-axis is the magnetic field zero if the two currents are in opposite directions?
Answers: 3
Since both magnetic fields must be equal in order cancel each other, and assuming that the point is closer to the 3A wire:
where 
would be the factor to convert the distances from cm to m.
where 
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Along wire carrying a 6.0 a current perpendicular to the xy-plane intersects the x-axis at x=−2.3cm....
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