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Looking for equation/proof of b field in a solenoid

  1. Apr 8, 2013 #1
    Hi guys, I'm looking for an equation and/or proof of the magnetic field produced inside a solenoid with a finite length (hence, it shouldn't just be "muNOT n I." For some reason I can't find a simple proof anywhere. I have no idea where to start. ampere's law obviously doesn't work, and that other law didn't seem of much use...

    Thanks in advanced!
  2. jcsd
  3. Apr 8, 2013 #2


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    Staff: Mentor

    Do you want it only on the axis (fairly simple) or anywhere inside the solenoid (very messy)?
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