Question

Which of the following is an electrical conductor at room temperature?

• A. Sn
• B. Mica
• C. Si
• D. C

Hint:

Metals like tin conduct electricity well at room temperature due to free electrons. Semiconductors and insulators need higher energy or doping to conduct.

Answer 1

The Correct Option is A

- Sn (Tin): A metal, exhibiting good electrical conductivity at ambient temperatures.
- Mica: An insulator, impeding the free movement of electrons.
- Si (Silicon): A semiconductor; its conductivity is enhanced by elevated temperatures or doping.
- C (Carbon): In its diamond form, it's an insulator. As graphite, it's a poor conductor, inferior to metals like tin.
Consequently, Sn (Tin) is the superior electrical conductor at room temperature among the provided substances.
Final answer: Sn