Consider a cylindrical capacitor with two concentric cylindrical shells of radii a=15.1m and b=54.0 m, and charge +Q on the inner one and −Q on the outer one where Q=30.3 C. Let the length of the cylinders be h=3.68e+4 m but ignore fringing fields.
Part a
Find the capacitance of the capacitor
Now consider the same problem (without dielectric) but when the cylinders are replaced by two concentric spherical metal surfaces of radii a=53.4 m b=87.2 m. Calculate the capacitance of the capacitor.