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A Hall effect transducer produces a voltage proportional to

  • A.the product of the current and the magnetic flux density
  • B.the rate of change of the magnetic flux through the element
  • C.the square of the magnetic flux density applied to the element
  • D.the temperature difference across the semiconductor element

Answer: A

Carriers moving along the element are deflected sideways by the field and pile up on one face, giving a transverse voltage proportional to both quantities. It measures magnetic field, and with a known field it measures current instead.

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