Materials and Components
The elements which become superconducting at extremely low temperatures are

Ferromagnetic at room temperature
Good conductors at room temperature
Insulators at room temperature
Relatively poor conductors at room temperature

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Materials and Components
With increase in temperature, the electrical conductivity would

Increase in metals as well as in intrinsic semiconductor
Decrease in metals as well as in intrinsic semiconductor
Decrease in metals but increase in intrinsic semiconductor
Increase in metals but decrease in intrinsic semiconductor

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