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Perfect Conductors

  1. Nov 14, 2007 #1
    In a theoretical perfect conductor, when it is placed into an already existing magnetic field it equally opposes the field. This is due to the induced current within it giving rise to a new magnetic field that opposes the existing one.

    However when a superconductor is already in the magnetic field and you try to move it out, it opposes this change and "wants to stay" in the field. Why is this? I have read Lenz's Law but do not fully understand the mechanism behind it. I would like to know exactly why this effect of the magnet opposing it's own removal out of the field takes place.

    Thank you very much
  2. jcsd
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