Electrostatics

Ordinary conductors of electricity become better conductors at lower temperatures. The ability of certain metals, their compounds and alloys to conduct electricity with zero resistance…

The resistivity of a material is the characteristic of that particular material. The materials can be broadly classified into conductors and insulators. The metals and…

Electric Current: The current is defined as the rate of flow of charges across any cross sectional area of a conductor. If a net charge…

In 1929, Robert J. Van de Graaff designed an electrostatic machine which produces the large electrostatic potential difference of the order of 107 V. The…

Lightning Conductor is a simple device used to protect tall buildings from the lightning. It consists of a long thick copper rod passing through the building…

The capacitor is a charge storage device. Work has to be done to store the charges in a capacitor. This work done is stored as…

The capacitor is the mechanical device designed to sustain the capacitance. Capacitor stores energy from a source such as electric cell and again uses it.…

Polarization of Dielectric Material: Consider a parallel plate capacitor with +q and –q charges. Fig: Polarization of dielectric material Let E0 be the electric field…

The alignment of the dipole moments of the permanent or induced dipoles in the direction of applied electric field is called polarization or electric polarization.…

A dielectric is an insulating material in which all the electrons are tightly bound to the nucleus of the atom. There are no free electrons…