Two small pithballs are attached to long silk threads. The balls are 1cm apart and are suspended between two very large (area=10m2) conducting plates whose separation is 3cm. The balls have equal amounts of positive and negative charge +q and -q (q=8x10-10C) A potential difference V is applied to the plates such that the silk threads hang vertically. a) Find V b) Find the capacitance of the two plates and the charge on either plate. c) The potential differences is removed and a gas with dielectric constant K=1.05 is allowed to completely fill the volume between the plates. Find the energy density in the volume.
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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.
Two small pithballs are attached to long silk threads. The balls are 1cm apart and are suspended between two very large (area=10m2)
a) Find V
b) Find the capacitance of the two plates and the charge on either plate.
c) The potential differences is removed and a gas with dielectric constant K=1.05 is allowed to completely fill the volume between the plates. Find the energy density in the volume.
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