A parallel-plate capacitor in air has a plate separation of 1.35 cm and a plate area of 35.0 cm2 . The plates are charged to a potential difference of 150 V and disconnected from the source. The capacitor is then immersed in distilled water. Assume the liquid is an insulator. Determine: (a) the charge on the plates before and after immersion (b) the capacitance and potential difference after immersion (c) the change in energy of the capacitor after immersion Find the relative permittivity Õc of the dielectric material present in a parallel-plate capacitor if: A = 0.12 m2, d = 80 μm, V =12 V, U =1 μJ A capacitor is composed of 2 plates separated by a sheet of insulating material 2mm thick and of relative permittivity 3. The distance between the plates is increased to allow the insertion of a second sheet of 3mm thick and of relative permittivity '! . If the equivalent capacitance is one-half of the original capacitance, find the value of '!.
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.
A parallel-plate capacitor in air has a plate separation of 1.35 cm and a plate area of 35.0 cm2
.
The plates are charged to a potential difference of 150 V and disconnected from the source.
The capacitor is then immersed in distilled water. Assume the liquid is an insulator. Determine:
(a) the charge on the plates before and after immersion
(b) the capacitance and potential difference after immersion
(c) the change in energy of the capacitor after immersion
Find the relative permittivity Õc of the dielectric material present in a parallel-plate capacitor if: A = 0.12 m2, d = 80 μm, V =12 V, U =1 μJ
A capacitor is composed of 2 plates separated by a sheet of insulating material 2mm thick and of relative permittivity 3. The distance between the plates is increased to allow the insertion of a second sheet of 3mm thick and of relative permittivity '! . If the equivalent capacitance is one-half of the original capacitance, find the value of '!.
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