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A toroidal solenoid with mean radius r and cross-sectional area A is wound uniformly with N1 turns. A second toroidal solenoid with N2 turns is wound uniformly on top of the first, so that the two solenoids have the same cross-sectional area and mean radius.
1. What is the mutual inductance of the two solenoids? Assume that the magnetic field of the first solenoid is uniform across the cross section of the two solenoids.
2. If N1 = 600 turns, N2 = 310 turns, r = 11.5 cm , and A = 0.600 cm^2, what is the value of the mutual inductance?
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