Question

Complete the following: A substance whose resistance becomes almost negligible at a temperature near absolute zero is called a __________.

• A. semiconductor
• B. superconductor

Hint:

Superconductor = SUPER CONDuctor = zero resistance. Semiconductor = SEMI (partially) conductor = resistance between a conductor and an insulator.

Answer 1

The Correct Option is B

The phenomenon where certain materials exhibit zero electrical resistance when cooled below a characteristic critical temperature is called superconductivity. A material that exhibits this property is called a superconductor. Semiconductors, on the other hand, have resistance that decreases with increasing temperature (opposite to metals), but it does not become negligible.