You have two concentric cylinders. The inner cylinder has radius a and the external cylinder has radius b. Find the electric potential in the region between the cylinders.
[Hint: The final equation takes the form V(r) = constant1 - constant2 ln(something) ]
Gauss's law: [itex]\Phi[/itex]=EA=q/ε
Coulomb's law: E=q/(4πεr^2)
The Attempt at a Solution
I really don't know.