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20-3 4 pts A square coil that consists of 100 turns of wire rotates about a vertical axis at 1500 rev/s. The horizontal component of the Earth's magnetic field at the location of the coil is 2.5e-5 T 20.0 cm 20.0 cm Determine the maximum emf induced in the coil by this field. V ( + 0.01 V) Source: Serway and Beichner, Physics for Scientists and Engineers, 5th edition, Problem 31.38 20-4 4 pts An electric motor consists of a rectangular coil (2.50 cm X 4.00 cm) with 80 turns of wire that draws I = 3.53 A of current as it rotates at 3600 rev/min in a uniform B = 0.800 T magnetic field. (a) Determine the maximum torque delivered by the motor. J ( + 0.002 J) (b) Determine the peak power produced by the motor. W ( + 0.2 W)