To monitor the breathing of a hospital patient, a thin belt is
girded around the patient's chest as in the figure below. The belt
is a 165-turn coil. When the patient inhales, the area encircled by
the coil increases by 40.0 cm2. The magnitude of Earth's
magnetic field is 50.0 µT and makes an angle of 28.0° with the
plane of the coil. Assuming a patient takes 1.50 s to inhale, find
the magnitude of the average induced emf in the coil during that
time.
|| = µV
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