A capacitor is constructed of two parallel plates of side l separated by a distance d. A material of dielectric constant k is inserted a distance x as shown in the figure. The potential difference between the plates is V. The energy stored by the system is: a. U=(1/2)(ϵ0l/d)(x+l(k−1))V2 b. U=(1/2)(ϵ0l/d)(l−x(k−1))V2 c. U=(1/2)(ϵ0l/d)(x−l(k−1))V2 d. U=(1/2)(ϵ0l/d)(l+x(k−1))V2
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 capacitor is constructed of two parallel plates of side l separated by a distance d. A material of dielectric constant k is inserted a distance x as shown in the figure. The potential difference between the plates is V. The energy stored by the system is:
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