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4. A circular coil of wire has a diameter of 0.200 m and contains 100 turns. The current in the coil is 5.00 A, and

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4. A circular coil of wire has a diameter of 0.200 m and contains 100 turns. The current in the coil is 5.00 A, and the coil is placed in a 1.50 T external magnetic field. Calculate the magnitude of the maximum torque (in units of N m) exerted on the coil by the external magnetic field. Write down your answer to three significant figures

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