A small sphere with mass 1.90 g hangs by a thread between two very large parallel vertical plates 5.00 cm apart. The plates are insulating and have uniform surface charge densities +δ and -δ. The charge on the sphere is q = 9 x 10-6 C. What potential difference between the plates will cause the thread to assume an angle of 300 with the vertical?

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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.