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Certain substances loose their electrical resistance completely at super low temperature. Such substances are called.
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- Super conductors
- Semi conductors
- Dielectrics
- Perfect conductors
- Super conductors
Correct Option: A
Superconductors are materials that carry electrical current with little or no resistance when cooled below a certain temperature. While conventional superconductors need to be cooled close to absolute zero (-273.15 °C) before they superconduct, high temperature superconductors do so above the boiling point of liquid nitrogen (-196 °C).
