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You have a wire of length L = 2.1 m for making a square coil of...

You have a wire of length L = 2.1 m for making a square coil of a dc motor. The current in the coil is I = 1.7 A, and the magnetic field of the motor has a magnitude of B = 0.40 T. Find the maximum torque exerted on the coil when the wire is used to make (a) a single-turn square coil and (b) a two-turn square coil.

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