A parallel-plate capacitor has capacitance 3.50 µF.
1. How much energy is stored in the capacitor if it is connected to a 9.00 V battery?
______µJ
2. If the battery is disconnected and the distance among the charged plates doubled, what is the energy stored?
_____µJ
3. The battery is subsequently reattached to the capacitor; however the plate separation remains as in part (b). How much energy is stored?
_____µJ