Question

The temperature below which a material becomes a superconductor is called ___ .

• A. cut-off voltage
• B. zener voltage
• C. inverse voltage
• D. critical voltage

Answer 1

The correct option is A cut-off voltage

The temperature below which a material becomes a superconductor is called as critical temperature. Bell laboratory has developed superconductor at a tamp of 40 k. by using an oxide of a compound of lanthanum, barium and copper.