To monitor the breathing of a hospital patient, a thin belt is girded around the patient's chest. The belt is a 192 turn coil. When the patient inhales, the area encircled by the coil increases by 21.2 cm2.
Find the average induced emf in the coil during this time. Assume the magnitude of the Earth's magnetic field is 26.9 ?T and makes an angle 11.7? with a line drawn per- pendicularly to the plane of the coil. A patient takes 1.08 s to inhale.