Suppose an empty capacitor with the distance between plates of the capacitor is 2.0 mm and the area of each plate is 4.5×10-3 m^2, is charged to a potential difference of 40.0 V. The charging battery is then disconnected, and a piece of Teflon™ with a dielectric constant of 2.1 is inserted to completely fill the space between the capacitor plates. What are the values of: (a) the capacitance, (b) the charge of the plate, (c) the potential difference between the plates, (d) the energy stored in the capacitor with and without dielectric, (e) the electric field before and after the Teflon™ is inserted, & (f) the surface charge induced on the Teflon™ surfaces?
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.
Suppose an empty capacitor with the distance between plates of the capacitor is 2.0 mm and the area of each plate is 4.5×10-3 m^2, is charged to a potential difference of 40.0 V. The charging battery is then disconnected, and a piece of Teflon™ with a dielectric constant of 2.1 is inserted to completely fill the space between the capacitor plates. What are the values of:
(a) the capacitance,
(b) the charge of the plate,
(c) the potential difference between the plates,
(d) the energy stored in the capacitor with and without
dielectric,
(e) the electric field before and after the Teflon™ is inserted, &
(f) the surface charge induced on the Teflon™ surfaces?
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