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Radial flow of charge across cylinder?

  1. Nov 2, 2011 #1
    Hi

    Please help me understand how charge flows in this case:

    There are 2 concentric cylinders, the outer one is hollow but the inner one is solid. The space between them is filled with a material of high resistivity. Now an electric circuit with voltage V is connected to the cylinder's faces. +ve end of the circuit goes into the outer cylinder and -ve end to the inner cylinder. The cylinders themselves have negligible resistance. What will happen in terms of charge flow here?
     
  2. jcsd
  3. Nov 2, 2011 #2
    Is there any symmetry? Use Gauss law to calculate the electric field.
     
  4. Nov 3, 2011 #3
    I tried using Gauss' Law, but I think there is charge flow from inner to outer cylinder through the resistive medium and Gauss' Law won't work in that case.

    I am only given the voltage V of the battery, the resistivity of the in-between material [itex]\rho[/itex], the inner radius r1, outer radius r2, and the length L of the 2 cylinders.
     
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