Two coaxial cylinders, inner radius a and outer radius b are separated by a material of conductivity given by [itex]\sigma (r) = k/r[/itex] for some constant 'k'. Find the resistance between the cylinders.(adsbygoogle = window.adsbygoogle || []).push({});

Here the conductivity is a function of position and the charge density is not zero in the resistive medium, and the electric field [itex]\vec E[/itex] does not go as 1/r. So how is this problem solved?

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Resistance between coaxial cylinders

**Physics Forums | Science Articles, Homework Help, Discussion**