Problem 5: An infinitely long straight wire is strung out along the y-axis, and carries acurrent I in the +y-direction. Superimposed upon the magnetic field, B1), produced bythe wire, is a uniform magnetic field, B(2), produced by other (distant) sources, with B2)pointing in the +x-direction. The net magnetic field, B = B(1) + B(2) is zero at some pointlocated on the z-axis at a distance d from the x-axis.If the current in the wire is increased by a factor of 3, i.e., to I' = 31, without changingB(2), the net magnetic field, B, will vanish on the z-axis at a distance d' from the x-axiswhere(A) d'(B) ď(C) d'(D) ď'Зd9d|3D(E) d'V3d

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