Machine-translated by Google. Questions are authored in English.
Top

Discussion

The skin depth in a good conductor varies with frequency as

  • A.the square root of frequency
  • B.not at all
  • C.the inverse square root of frequency
  • D.the inverse of frequency

Answer: C

The expression is \( \sqrt{2/(\omega\mu\sigma)} \), so raising the frequency a hundredfold reduces the depth tenfold. In copper it is about nine millimetres at fifty hertz and two hundredths of a millimetre at ten megahertz.

No comment is present. Be the first to comment.
Loading…

Post your comment

Please log in or register to post a comment.