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Polystyrene has dielectric constant 2.6 and dielectric strength 2.0 10^7 V/m. A piece of polystyrene is used as a dielectric in a parallel-plate...
Polystyrene has dielectric constant 2.6 and dielectric strength 2.0 × 10^7 V/m. A piece of polystyrene is used as a dielectric in a parallel-plate capacitor, filling the volume between the plates.
a.) When the electric field between the plates is 83% of the dielectric strength, what is the energy density of the stored energy?
b.) When the capacitor is connected to a battery with voltage 500 V, the electric field between the plates is 83% of the dielectric stregth. What is the area of each plate if the capacitor stores 0,15 mJ of energy under these conditions?
