A wire along the y-axis carries current in the +y-direction. An experimenter would like to arrange a second wire parallel to the first wire and crossing the x-axis at the coordinate x = 2.0 m so that the total magnetic field at the coordinate x = 1.0 m is zero. In what direction must the current flow in the second wire, assuming it is equal in magnitude to the current in the first wire? Explain.

A wire along the y-axis carries current in the +y-direction. An experimenter would like to arrange a second wire parallel to the first wire and crossing the x-axis at the coordinate x = 2.0 m so that the total magnetic field at the coordinate x = 1.0 m is zero. In what direction must the current flow in the second wire, assuming it is equal in magnitude to the current in the first wire? Explain.

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