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What are superconductors?
Superconductors are metals or compounds that will conduct without resistance. However, certain conditions are required for this to happen.
Heike Kamerlingh Onnes first discovered superconductors.
When the temperature is very low, some materials become perfect conductors, with no resistivity.
This means that no energy is lost through heat.
In a closed loop of superconducting wire carrying a current will be done without any resistance, so long as the temperature is kept below the critical temperature. This is the temperature at which a superconductor is made.
When the current does not require a power output it is called persistent current.
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