A 40 µF capacitor with an air gap of 2 mm is connected across a 12-V battery. (a) Calculate the charge, electric field and potential energy stored in this capacitor. (b) If an insulator with a dielectric constant of 5.0 is inserted between the metal plates, calculate the new capacitance, voltage, charge, electric field and potential energy in this capacitor.
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.
Capacitance
A 40 µF capacitor with an air gap of 2 mm is connected across a
12-V battery. (a) Calculate the charge, electric field and potential
energy stored in this capacitor. (b) If an insulator with a dielectric
constant of 5.0 is inserted between the metal plates, calculate the
new capacitance, voltage, charge, electric field and potential
energy in this capacitor.
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