What is the term for a substance that does not allow heat or electricity to pass through it easily?
A
Conductor
B
Insulator
C
Semiconductor
D
Superconductor
Correct Answer: Option B — Insulator
Explanation:
Insulators, such as rubber, glass, and wood, resist the flow of heat or electric current due to a lack of freely moving charge carriers. They are commonly used to protect wiring and prevent unwanted energy transfer.