A parallel-plate capacitor has a capacitance of 10 mF and charged with a 10 V power supply. The power supply is then removed and a dielectric of dielectric constant 4 is used to fill the space between the plates. The energy (in J) now stored by the capacitor is?" The answer they put was .13, I just don't know how they got there.
Dielectric Constant Of Water
Water constitutes about 70% of earth. Some important distinguishing properties of water are high molar concentration, small dissociation constant and high dielectric constant.
Electrostatic Potential and Capacitance
An electrostatic force is a force caused by stationary electric charges /fields. The electrostatic force is caused by the transfer of electrons in conducting materials. Coulomb’s law determines the amount of force between two stationary, charged particles. The electric force is the force which acts between two stationary charges. It is also called Coulomb force.
The question says, "A parallel-plate capacitor has a capacitance of 10 mF and charged with a 10 V power supply. The power supply is then removed and a dielectric of dielectric constant 4 is used to fill the space between the plates. The energy (in J) now stored by the capacitor is?" The answer they put was .13, I just don't know how they got there.
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