Quantum Theory / Particle Physics
May 23, 2020
Electric current, Ohm law, first law of Joule, electric potential, electric energy, electric resistance, resistivity, electrical conductivity, tension, current, electron, electronic cloud.
Electric current in metallic conductor is not a current of electric charges or their porters – electrons; rather it is current of their kinetic energy. Electric current conductors e.g. resistors are provided with electronic gas that forms some kind of electronic cloud with electrons that while moving chaotically are trying to run with an equal velocities, thanks to which if in some place of the cloud they run for a while with a different velocity the next moment their velocities and their kinetic energies would get equal to the all others. Although their speeds are incomparable, electricity conduction has a long ago noticed analogy with conduction of heat, which is easy to understand if to compare masses of electrons and those of atoms or molecules of heat conducting objects. Electric energy is transported from electron to electron that practically do not change their place in the cloud, as well as heat is transported from molecule to molecule that also do not change their place in the object. Resistivity may be imagined as