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Magnetic Field -- break in the continuity of a conductor

  1. Nov 13, 2014 #1
    Hi! Just curious...
    Does a break in the continuity of a conductor's volume affect its magnetic field, resistance, etc?
     
  2. jcsd
  3. Nov 13, 2014 #2

    Doug Huffman

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    A continuous circuit is necessary for an electric current and an electric current of charges is required to generate a magnetic field. Now if you mean a nick in the volume, then resistance is proportional to the effective area of the conductor.
     
  4. Nov 13, 2014 #3
    thanks for the reply.
    what if the cross-sectional area of a conductor is not uniform, say there are microscopic fractures in a certain region, is there some way to detect this?
    Does this make sense?
     
  5. Nov 13, 2014 #4

    Doug Huffman

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    Sure, makes sense, and yes, many ways. Reflectometry from my experience, or merely resistance of the conductor.
     
  6. Nov 13, 2014 #5
    this is just amazing! does reflectometry work even for low-frequency radiation? I only know xray reflectometry.
     
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