Question : certain substances loose their electrical resistance completely at super low temperature. such substance are called
Option 1: super conductors
Option 2: semi conductors
Option 3: dilectrics
Option 4: perfect conductors
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Correct Answer: super conductors
Solution : The correct option is superconductors.
Superconductors are substances that fully loose their electrical resistance at very low temperatures. When Heike Kamerlingh Onnes saw that the electrical resistance of mercury dropped to zero at temperatures close to absolute zero (around 273.15 degrees Celsius), he made the first discovery of the phenomenon now known as superconductivity.
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