A circular loop of radius 7.5 cm carries a current of 22 A. A flat coil of radius 0.81 cm, having 69 turns and a current of 1.2 A, is concentric with the loop. The plane of the loop is perpendicular to the plane of the coil. Assume the loop's magnetic field is uniform across the coil. What is the magnitude of (a) the magnetic field produced by the loop at its center and (b) the torque on the coil due to the loop?

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Q: A square loop (L = 0.20 m) consists of 50 closely wrapped turns, each carrying a current of 0.50 A.…

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