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a) A 550-turn solenoid, 28 cm long, has a diameter of 2.3 cm . A 15-turn...

a) A 550-turn solenoid, 28 cm long, has a diameter of 2.3 cm . A 15-turn coil is wound tightly around the center of the solenoid. If the current in the solenoid increases uniformly from 0 to 4.6 A in 0.60 s , what will be the induced emf in the short coil during this time?

b) A 15.5-cm-diameter loop of wire is initially oriented perpendicular to a 1.4-T magnetic field. The loop is rotated so that its plane is parallel to the field direction in 0.25 s. What is the average induced emf in the loop?

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