The drawing shows a type of flow meter that can be used to measure the speed of
ID: 2144074 • Letter: T
Question
The drawing shows a type of flow meter that can be used to measure the speed of blood in situations when a blood vessel is sufficiently exposed (e.g., during surgery). Blood is conductive enough that it can be treated as a moving conductor. When it flows perpendicularly with respect to a magnetic field, as in the drawing, electrodes can be used to measure the small voltage that develops across the vessel. Suppose the speed of the blood is 0.49 m/s and the diameter of the vessel is 4.9 mm. In a 0.56-T magnetic field what is the magnitude of the voltage that is measured with the electrodes in the drawing? plz provide The UNIT....
The drawing shows a type of flow meter that can be used to measure the speed of blood in situations when a blood vessel is sufficiently exposed (e.g., during surgery). Blood is conductive enough that it can be treated as a moving conductor. When it flows perpendicularly with respect to a magnetic field, as in the drawing, electrodes can be used to measure the small voltage that develops across the vessel. Suppose the speed of the blood is 0.49 m/s and the diameter of the vessel is 4.9 mm. In a 0.56-T magnetic field what is the magnitude of the voltage that is measured with the electrodes in the drawing? plz provide The UNIT....Explanation / Answer
The magnetic force on a charge q will be:
F = qvB = q*0.15*0.94 = q*0.141, so it corresponds to an electric field of 0.141.
The corresponding voltage is thus:
0.141 * 6e-3 = 8.46e-4 (V)
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