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Electromagnetic TheoryFaraday's Law

A stationary closed conducting loop is placed in a magnetic field that is constant with time. If the flux through the loop does not change, the transformer-induced emf is?

  • AZero
  • BMaximum
  • CEqual to magnetic flux
  • DAlways 1 V
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Correct Answer: A. Zero
Explanation: Faraday's law requires a time-varying flux linkage for transformer emf; if flux is constant, induced emf is zero.
Reference: Standard electromagnetic theory: faraday's law
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