Energy, E = (1/2)CV2
a) For parallel:
Ceq = 6 + 3 = 9.0 μF
You have two capacitors, one is 6.0 μF the other is 3.0 μF. You also have some wires and a 9.0 V battery.
Determine the total energy stored by the capacitors when a) Connected in parallel and b) connected in series. Which configuration has greater energy?