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Radial current in a curved wire?

  1. Sep 17, 2010 #1

    jpo

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    Direct current flows through curved wire with finite thickness. Will there be current in radial direction due to curvature (so to say, "charge inertia")?
    I suppose this radial current will be due to self-induction.
     
  2. jcsd
  3. Sep 17, 2010 #2
    There shouldn't be net current because there is nowhere for the current to go in that direction. A slight negative charge would build up on the outside that would cancel out the effect of any "charge inertia" quickly.

    But yes, I think inductance would cause the basic effect you're describing, that the current would slightly resist turning.
     
  4. Sep 17, 2010 #3

    jpo

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    Thank you for your reply. Yes, I was also thinking of "polarization" due to negative charge build-up on the outward radial end.

    Do you know a reference text/paper that describes this? Usually when people speak of coils or solenoids they are always considered infinitely thin
     
  5. Sep 17, 2010 #4

    jpo

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    I have never read anything about radial polarization before. If anyone has a reference, please share...
     
  6. Sep 19, 2010 #5

    jpo

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    Anyone?
     
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