A capacitor is constructed from two conducting disks with radii of r = 2.0 cm and a dielectric with constant κ = 270. (a) At what separation distance d should the plates be to give a capacitance of 3.0 nF? Assume the dielectric can be made to fill the space completely for any d. (b) If this capacitor is connected to a battery with voltage E = 12.0 V, how much charge Q will collect on the plates? (c) How much electric potential energy UC will be stored in the charged capacitor as a result?
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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.
A capacitor is constructed from two
dielectric with constant κ = 270.
(a) At what separation distance d should the plates be to give a capacitance of 3.0 nF?
Assume the dielectric can be made to fill the space completely for any d.
(b) If this capacitor is connected to a battery with voltage E = 12.0 V, how much
charge Q will collect on the plates?
(c) How much electric potential energy UC will be stored in the charged capacitor as
a result?
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