To monitor the breathing of a hospital patient, a thin belt is girded around the

Question

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 240-turn coil. When the patient inhales, the area encircled by the coil increases by 36.0 cm2. The magnitude of Earth's magnetic field is 50.0

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 240-turn coil. When the patient inhales, the area encircled by the coil increases by 36.0 cm2. The magnitude of Earth's magnetic field is 50.0 µT and makes an angle of 25.0 degree with the plane of the coil. Assuming a patient takes 2.10 s to inhale, find the magnitude of the average induced emf in the coil during that time

Explanation / Answer

Induced EMF = Rate of change of flux = (N*B*delta_A*cos theta)/2.1 = 240*50*0.0036*cos(90-25) / 2.1

= 8.69 micro Volts

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