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Homework Help: Resistance through a cylinder

  1. Feb 7, 2009 #1
    1. The problem statement, all variables and given/known data

    Hey guys.
    So I got this cylinder with radius R1, R2 and length L as you can see in the pic.
    I need to find the resistance of the system for a current that goes from the inner cylinder to the outer cylinder (radial style :smile:).

    I uploaded my solution but I'm not so sure about it, can you please tell me if what I did is right?

    Thanks in advance.


    2. Relevant equations



    3. The attempt at a solution
     

    Attached Files:

  2. jcsd
  3. Nov 13, 2009 #2
    Hi, Not sure if you sorted this or not, but the correct solution I believe is:-

    Resistance (ohms) = (Ln(R2)-Ln(R1)).ρ/(Pi.L)
     
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