A parallel plate capacitor of capacitance 7.2 µF has the space between the plates filled with a slab of glass with ? = 3.5. The capacitor is charged by attaching it to a 1.2-V battery. After the capacitor is disconnected from the battery, the dielectric slab is removed.
(a) Find the capacitance after the glass is removed. F
(b) Find the potential difference after the glass is removed. V
(c) Find the charge on the plates after the glass is removed. C
(d) Find the energy stored in the capacitor after the glass is removed. J