What is a an explanation for conductor
Answers
Explanation:
Pure elemental silver is the best electrical conductor encountered in everyday life. Copper, steel, gold, aluminum, and brass are also good conductors. In electrical and electronic systems, all conductors comprise solid metals molded into wires or etched onto circuit boards.
Some liquids are good electrical conductors. Mercury is an excellent example. A saturated salt-water solution acts as a fair conductor. Gases are normally poor conductors because the atoms are too far apart to allow a free exchange of electrons. However, if a sample of gas contains a significant number of ions, it can act as a fair conductor.
A substance that does not conduct electricity is called an insulator or dielectric material. Common examples include most gases, porcelain, glass, plastic, and distilled water. A material that conducts fairly well, but not very well, is known as a resistor. The most common example is a combination of carbon and clay, mixed together in a specific ratio to produce a constant and predictable opposition to electric current.
Substances called semiconductors act as good conductors under some conditions and poor conductors under other conditions. Silicon, germanium, and various metal oxides are examples of semiconductor materials. In a semiconductor, both electrons and so-called holes (electron absences) act as charge carriers.
At extremely low temperatures, some metals will conduct electricity better than any known substance at room temperature. This phenomenon is called superconductivity, and a substance that behaves that way is called a superconductor.
a substance which conduct electricity is called conductor.
conductor can be explained in in band theory too:-
according to band theory conduction band overlap valence band then electron easily transfer from valence band to conduction band then the substance is called conductor.
conductor is the special property of a metal .