Part a and b Please. 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. Part A When the electric field between the plates is 81 % of the dielectric strength, what is the energy density of the stored energy? Part B When the capacitor is connected to a battery with voltage 500.0 V, the electric field between the plates is 81 % of the dielectric strength. What is the area of each plate if the capacitor stores 0.20 mJ of energy under these conditions?

Question

Part a and b Please.

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.


Part A
When the electric field between the plates is 81 % of the dielectric strength, what is the energy density of the stored energy?


Part B
When the capacitor is connected to a battery with voltage 500.0
V, the electric field between the plates is 81 % of the dielectric strength. What is the area of each plate if the capacitor stores 0.20 mJ of energy under these conditions?

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