An air-filled spherical capacitor is constructed with an inner-shell radius of 7.40 cm and an outer-shell radius of 12.4 cm . (a) Calculate the capacitance of the device.
pF
(b) What potential difference between the spheres results in a
4.00\mu C
charge on the capacitor? kV (c) What If? What would be the length (in cm ) of a cylindrical air-filled capacitor with the same inner and outer radii as the spherical capacitor if it were to have the same capacitance as the spherical capacitor?
cm