A 100-turn square coil of side 20.0 cm rotates about a

Chapter 31, Problem 42

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A 100-turn square coil of side 20.0 cm rotates about a vertical axis at 1.50 3 103 rev/min as indicated in Figure P31.42. The horizontal component of the Earths magnetic field at the coils location is equal to 2.00 3 1025 T. (a) Calculate the maximum emf induced in the coil by this field. (b) What is the orientation of the coil with respect to the magnetic field when the maximum emf occurs?

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