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E&M: anyone knows what this equation is?

  1. Dec 1, 2011 #1
    I_c = A [ e^{(qV_b)/kT} -1]

    A is a constant

    How can i derive it? Where can I find more about this equation? Online source would be great.
  2. jcsd
  3. Dec 1, 2011 #2


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    Staff: Mentor

  4. Dec 1, 2011 #3
    you sir are a life saver!
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