Side-by-side wires. Two very long cylindrical wires of length L, each of radius R, run right next to each other, as shown.,The left wire carries current I into the page, while the right wire carries equal current out of the page. In both wires, the current is uniformly distributed across the whole cross-sectional area. If we looked from the side, the points W, X, Y, Z are all far from the ends of the wires. What is the magnitude and direction of the magnetic field at each of the points below? (a) W, the center of the left wire. (b) X, a distance R/2 from the center of the left wire and R/2 from the edge of the right wire. (c) Y, where the wires touch. (d) Z, a distance 2R from the centers of both wires.
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