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Magnetic field due to current carrying semicircular arcs.

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The problem states:

Two semicircular arcs have radii R2 = 7.80 cm and R1 = 3.15 cm, carry current i = 0.281 A, and share the same center of curvature C. What are the (a) magnitude and (b) direction (into or out of the page) of the net magnetic field?

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Solution Summary

The two semicircular arcs are concentric and with different radii form a current carrying loop. Magnetic field at the center is calculated.