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Homework Help: Inductance of coaxial cable

  1. Feb 10, 2010 #1
    1. The problem statement, all variables and given/known data

    If the outer conductor of a coaxial cable has radius 3.5 , what should be the radius of the inner conductor so that the inductance per unit length does not exceed 55 per meter?

    2. Relevant equations

    3. The attempt at a solution

  2. jcsd
  3. Feb 11, 2010 #2


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    Re: Sos

    Welcome to Physics Forums :smile:
    Can you show how you got that answer? And the equations you used to get it?

    I have some questions about your question:
    • The cable radius is 3.5 what?
    • Is it asking for inductance or capacitance per unit length?
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