In magnetic flow meters, voltage generation is________________?
Correct answer: C. Both A. and B.
- A. Due to the motion of conducting fluid through an externally generated uniform field
- B. Proportional to the fluid velocity
- C. Both A. and B.
- D. Neither A. nor B.
Explanation
A magnetic flowmeter uses Faraday's law: a conducting fluid moving through an externally applied magnetic field generates a voltage proportional to its velocity, assuming the field and meter geometry are fixed.
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