The elements which become superconducting at extremely low temperatures are
A. good conductors at room temperature
B. ferromagnetic at room temperature
C. relatively poor conductors at room temperature
D. insulators at room temperature
Answer:C
The elements which become superconducting at extremely low temperatures are
A. good conductors at room temperature B. ferromagnetic at room temperature C. relatively poor conductors at room temperature D. insulators at room temperature