A parallel-plate capacitor has a capacitance of 500 pF, a plate area of 550 cm2, and a mica dielectric (K = 5.40) completely filling the space between the plates. At 77.0 V potential difference, calculate (a) the electric field magnitude E in the mica, (b) the magnitude of the free charge on the plates, and (c) the magnitude of the induced surface charge on the mica. (a) Number i Units (b) Number Units (c) Number i Units
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.
Given
C, capacitance = 500 pF
Plate area, A = 550 cm2
Dielectric constant, k = 5.40
Potential, V = 77.0 V
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