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What is a superconductor?
A material is said to be a superconductor if when it is broughtdown to a critical low temperature it loses its resistivitycompletely. A superconductor is a material that ha…s zero electrical resistanceat certain temperatures. For example, in a ring of superconductingmaterial, if you induce a current to flow in a circle, it willcontinue flowing for ever. So far, it has only been possible tocreate superconductors at cryogenic (i.e., "supercold")temperatures. Superconductivity is a property of a substance at a giventemperature, not of a substance at any temperature. Superconductors are things that have no electrical resistance whenthey are at low enough temperatures, typically close to absolutezero i.e. 0 Kelvin or about -273 degrees C. There are also 'high-temperature' superconductors that operate atabout 70 degrees K (-203 degrees C). We haven't yet found a substance that works as a superconductor atroom temperature there is a lot of research on-going. The aim is totry to find metal alloys or other substances that will behave assuperconductors at temperatures which are much closer to roomtemperature than to absolute zero i.e. 0 Kelvin or about -273degrees C. .
A conductor that allows electricity to flow easily ~APEX . (MORE)
