When a 360 nF air capacitor is connected to a power supply, the energy stored in the capacitor is 23.2 µJ. The capacitor is then disconnected from the power supply and a slab of dielectric is inserted that completely fills the space between the plates. This decreases the stored energy by 18.5 µJ. What is the voltage across the capacitor with the dielectric inserted?

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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.