The flash of a camera uses a 3,0 volt battery to charge its capacitor. The capacitor is charged slowly, but the charge (and the energy) is released in a time of 10 µs when the button is pressed. (a) If the flash operates at a power of 10 W, how large capacitance should the capacitor have in order to make the flash function?
(b) In which ways could you improve the capacitance of the capacitor?
(c) Describe what happens in a capacitor if more charges are added to the capacitor plates than the dielectric medium allows (you might need to look this up from the internet).

I'm trying to figure this out, I'm just really confused where 10W or 10µs comes in :( Any help is so greatly appreciated!