Chapter 29, Problem 008 In the figure, two semicircular arcs have radii R2 (into or out of the page) of the net magnetic field at C? = 21.1 cm and R1 = 7.80 cm, carry current i = 0.974 A, and have the same center of curvature C. What are the (a) magnitude and (b) direction R2 R1
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