1. The plates of a spherical capacitor have radii 38.0mm and 40.0mm.
a) Calculate the capacitance.
b) What must be the plate area of a parallel plate capacitor with the same plate sesperation and capacitance?
2. A parallel plate air filled capacitor having area 40cm^2 and plate spacing 1.0mm is charged to a potential difference of 600V.
a) Find the capacitance.
b) the magnitude of the charge on each plate.
c) the stored energy.
d) the electric field between the plates.
e) the energy density between the plates.
3. A certain paralled plate capacitor is filled with dielectric for which k=5.5. The area of each plate is 0.034m^2 and the plates are separated by 2.0mm. The capacitor will fail if the electric field between the plates exceeds 200 kN/C.
a) What is the maximum energy that can be stored in the capacitor?