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Two very long parallel wires in the xy -plane, a distance 2 a apart, are paralle

ID: 2149020 • Letter: T

Question


Two very long parallel wires in thexy-plane, a distance 2aapart, are parallel to they-axis and carry equal currentsIas shown in the figure. The +zdirection points perpendicular to thexy-plane in a right-handed coordinate system. If the left current flows in the +ydirection and the right current flows in the-ydirection, which one of the graphs shown in the figure below best represents thezcomponent of the net magnetic field, in thexy-plane, as a function ofx? (Caution:These graphs arenotmagnetic field lines.)



Explanation / Answer

as wires current are in oppsoite direction theri magnetic field add up in the region between them between -a

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Two very long parallel wires in the xy-plane, a distance 2a apart, are parallel

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