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

Step 1: Understanding the Concept:
The resistance of most conductors decreases as temperature decreases. For certain materials, resistance drops abruptly to zero at a specific critical temperature.
Step 2: Detailed Explanation:
A superconductor is a material that can conduct electricity with zero resistance when cooled below its critical temperature (usually very close to absolute zero, 0 K).
In contrast, a semiconductor's resistance increases as temperature decreases toward absolute zero, eventually behaving like an insulator.
Step 3: Final Answer:
The substance is called a superconductor.