* Energy of a Capacitor in the Presence of a Dielectric O 9 of A dielectric-filled parallel-plate capacitor has plate area A = 20.0 cm , plate separation d - 6.00 mm and dielectric constant k= 2.00. The capacitor is connected to a battery that creates a constant voltage V = 12.5 V. Throughout the problem, use co = 8.85x10-12 C /N. m2. Find the energy U of the dielectric-filled capacitor. Express your answer numerically in joules. View Available Hint(s) Submit • Part B The dielectric plate is now slowly pulled out of the capacitor, which remains connected to the battery. Find the energy Uz of the capacitor at the moment when the capacitor is half-filled with the dielectric. Express your answer numerically in joules. > View Available Hint(s) Uz = J Submit • Part C The capacitor is now disconnected from the battery, and the dielectric plate is slowly removed the rest of the way out of capacitor. Find the new energy of the capacitor, U3. Express your answer numerically in joules. > View Available Hint(s) U3 - 4.43 • 10 12 J Suhmit

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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.