Solved: In Fig. 29-47, part of a long insulated wire

Chapter , Problem 20

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In Fig. 29-47, part of a long insulated wire carrying current i = 5.78 rnA is bent into a circular section of radius R = 1.89 cm. In unit-vector notation, what is the magnetic field at the center of curvature C if the circular section (a) lies in the plane of the page as shown and (b) is perpendicular to the plane of the page after being rotated 90 counterclockwise as indicated?

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