Low-temperature physics: What defines a superconductor? Choose the most accurate description of electrical and magnetic behavior below a critical temperature Tc. Choose the correct option.
IIT JEE
Physics
Difficulty: Easy
Choose an option
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AInfinite resistance and perfect diamagnetism
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BZero electrical resistance and Meissner effect (expulsion of magnetic field) below T<sub>c</sub>
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CVery high resistivity that decreases slowly with temperature
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DBecomes a ferromagnet below T<sub>c</sub>
Answer
Correct Answer: Zero electrical resistance and Meissner effect (expulsion of magnetic field) below T<sub>c</sub>
Explanation
DefinitionA superconductor exhibits zero DC resistance and expels magnetic fields (Meissner effect) below its critical temperature.
Final AnswerZero electrical resistance and Meissner effect (expulsion of magnetic field) below Tc