An isolated cylindrical capacitor consists of two concentric conducting cylinders of length L and radii a and b. The inner and outer conductors carry +Q and -Q, respectively.
a. Determine the electric field between the conductors.
b. Determine the electric potential difference between the two conductors.
c. What is the capacitance of this device?
The Attempt at a Solution
a. I got as my answer E=Q/(2[tex]\pi[/tex]Epsilon not (aL))
b. I used the integral with V and got Q/(2[tex]\pi[/tex]Epsilon not (a) (ln(b/a))
c. I plugged my answer from b into C=Q/V and got ln(b/a)/(2[tex]\pi[/tex]Epsilon not (a))
I am not sure if I did any of these right...