[Solved] Superconductors are those elements –

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Q.	Superconductors are those elements –
A.	Whose conductivity is intermediate between metals and insulators
B.	Whose resistance falls almost to zero at very low temperature
C.	Which conduct electricity only at super-high temperature
D.	Which conduct electricity only, at super-high temperatures
Answer» B. Whose resistance falls almost to zero at very low temperature
Explanation: Superconductivity is a phenomenon of exactly zero electrical resistance and expulsion of magnetic fields occurring in certain materials when cooled below a characteristic critical temperature. It is characterized by the Meissner effect, the complete ejection of magnetic field lines from the interior of the superconductor as it transitions into the superconducting state.

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