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Substances which lose their electrical resistance at very low temperature are called

Q. Substances which lose their electrical resistance at very low temperature are called

 A   Good conductors
 B   Semiconductors
 C   Dielectrics
 D   Superconductors
Answer:-Superconductors
Explanation:  

Superconductivity is a phenomenon of exactly zero electrical resistance and expulsion of magnetic flux fields occurring in certain materials when cooled below a characteristic critical temperature. It was discovered by Dutch physicist Heike Kamerlingh Onnes on April 8, 1911 in Leiden.

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In a AC circuit containing capacitance only

Einstein was awarded Nobel Prize for