- #1
amoena
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Homework Statement
two long cylinders (radii a and b) are separated by material of conductivity (sigma). if they are maintained at a potential difference V, what current flows from one to the other, in a length L?
Homework Equations
Please see the attachment
The Attempt at a Solution
solution for the problem is already in the book because it is an example problem, but I don't understand how I can get the expression for E.
I am also confused why I have to use line charge density on the inner cylinder. Shouldn't I use volume charge density since the inner cylinder has volume? or at least surface charge density.Thank you