Abslyut nol harorat

An electromagnetic field is a form of matter through which electromagnetic interactions of charged particles or bodies, generally moving in a given frame of reference, are performed.
The principle of superposition of electric fields: the electric field strength of a system of charges is equal to the vector sum of the field intensities created by each of them separately:
An electric dipole is a set of two point charges + q and -q equal in magnitude and opposite in sign, located at a distance l from each other.
Conductors are substances in which ordered movement of electric charges can occur, i.e. carry an electric current.
Electrostatic induction is a phenomenon of redistribution of charges in a conductor in an external electrostatic field.
Dielectrics are substances that do not conduct an electric current.
Homogeneous (isotope) dielectric - dielectric which all its properties are identical at any point of the dielectric volume and in all directions inside the dielectric.
Orientational polarization is a polarization of the type described.
The electrical capacity of a solitary conductor is a physical quantity measured by the ratio of the charge of a solitary conductor to its potential.
The mutual electric capacity - (mutual capacitance) of two conductors is a physical quantity equal to the charge that must be transferred from one conductor to another in order to change the potential difference between them:
A flat capacitor consists of two parallel flat plates, charged with the same absolute value, but with opposite charges.
The intrinsic energy of a charged conductor is the potential energy of the interaction of charges on the conductor.
An electric current is the ordered motion of electric charges.
The conduction current is the ordered motion of free electric charges occurring in a conductor.
Convection current is an ordered movement of electric charges, occurring when moving in the space of a charged body.