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Electromagnetic TheorySkin Effect

For a good conductor, skin depth decreases when frequency?

  • AIncreases
  • BDecreases
  • CBecomes zero only
  • DHas no effect
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Correct Answer: A. Increases
Explanation: For a good conductor, δ≈sqrt(2/(omega mu sigma)), so increasing frequency decreases skin depth.
Reference: Standard electromagnetic theory: skin effect
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