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Homework Help: [Electromagnetic Fields] Electrical conductivity of a material

  1. Dec 15, 2011 #1
    1. The problem statement, all variables and given/known data

    Two inflnitely long, straight, parallel Wires are embedded in an infmite medium of conductivity 2 Sm-1. The wires are identical, with a round cross-section of radius 0.25 cm. The centres of the wires are 1 cm apart. Find the conductance per metre between the wires.

    A) 0.76 Sm-1
    B) 1.19 Sm-1
    C) 3.05 Sm-1
    D) 4.77 Sm-1

    2. Relevant equations

    J = σE
    ∫D∙ds = ∫ρdv = Q or ∇∙D = ρ
    D = εE

    3. The attempt at a solution

    I have no idea where to start from :( ...
     
  2. jcsd
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