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Homework Help: Transposition of formula(inductance)

  1. Sep 25, 2006 #1
    Hi i hope you can help me?
    My question is:

    Given the relationships:

    B/h = U, H = IN/l and L = N x dphi/dI {ie, L = N x change in phi/change in I}.

    show that the inductance of the coil is:

    L = Nsquared/S Where S = l/uA ????????????

    .l is lower case L for length
    .U is absolute permeability.
    your help would be most welcome please many thanks
  2. jcsd
  3. Sep 25, 2006 #2
    Have you got any ideas on how you might find the equation for the inductance of a solenoid?
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