A 100-pF capacitor and a 400-pF capacitor are both charged to 2 kV.

A 100-pF capacitor and a 400-pF capacitor are both charged to 2 kV. They are then disconnected from the voltage source and are connected together, positive plate to negative plate and negative plate to positive plate.

a) Find the resulting potential difference across each capacitor.

b) Find the energy dissipated when the connections are made.