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Wire loop parallel to and above an infinite plane of iron

  1. Nov 18, 2011 #1
    1. The problem statement, all variables and given/known data

    A wire Loop R with a current I=10A running through it, is distance d above an infinite plane of iron with mu=5mu_0 R=2d. Find the force on the loop

    2. Relevant equations

    I would assume you could use image currents in the plane of iron to solve this

    3. The attempt at a solution

    I have no idea where to start: I drew an "image current loop" a distance d BELOW the plane, labeled I', and now I need to get I in terms of I'? How am I supposed to do that?

    Thanks in advance
     
  2. jcsd
  3. Nov 18, 2011 #2
    Or is there another way of doing this that I'm somehow missing?
     
  4. Nov 18, 2011 #3
    I am so lost.. :(
     
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