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Magnitude of voltage picked up is denoted as e = CHVd, where C is __________

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Magnitude of voltage picked up is denoted as  e = CHVd, where C is __________

(a) velocity of blood flow

(b) strength of magnetic field

(c) diameter of blood vessel

(d) constant of proportionality

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This intriguing question originated from Application of Telemedicine in chapter Telemedicine Technology of Biomedical Instrumentation

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The correct option is (c) diameter of blood vessel

Easiest explanation: The magnitude of the voltage picked up is directly proportional to the strength of the magnetic field, the diameter of the blood vessel and the velocity of blood flow, i.e. e = CHVd, where e = induced voltage, H = strength of the magnetic field, V = velocity of blood flow, d = diameter of the blood vessel and C = constant of proportionality.

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