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← Electric Current and Its Effects
GK QUESTION#2951

According to Lenz's Law, what determines the direction of an induced current in a conductor?

  1. AIt continuously reduces the applied magnetic flux.
  2. BIt always enhances the existing magnetic field.
  3. CIt flows to oppose the variation in magnetic flux causing it.Correct answer
  4. DIt is proportional to the strength of the magnetic field.
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Answer

C. It flows to oppose the variation in magnetic flux causing it.

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Explanation

Lenz’s law determines the direction: the induced current produces a magnetic effect opposing the change in magnetic flux that causes it. It opposes the change, so it does not always reduce the original field.

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