An air-filled capacitor is made from two flat parallel plates located 1.0 mm apart. The area of each plate is 8.0 cm2.
What is the capacitance of the plates?
What is the capacitance of the plates if the region between the plates is filled with a material whose dielectric constant is 6.0?
A parallel-plate capacitor has square plates that are 8.00 cm on each side and 3.80 mm apart. The space between the plates is completely filled with two square slabs of dielectric, each 8.00 cm on a side and 1.90 mm thick. One slab is Pyrex glass with a dielectric constant and the other slab is polystyrene with a dielectric constant . If the potential difference between the plates is 86.0 V, find how much electrical energy can be stored in this capacitor.