Applied physics (lighting): The filament material of a typical incandescent electric bulb. Consider high melting point, strength at high temperature, and emissivity. Choose the correct material.
General Knowledge
General Science
Difficulty: Easy
Choose an option
-
ATungsten
-
BNichrome
-
CGraphite
-
DIron
Answer
Correct Answer: Tungsten
Explanation
Given data
- Ask: Filament material for incandescent bulbs.
Concept/Approach Tungsten (melting point ≈ 3422 °C) withstands high temperatures and has suitable mechanical properties when coiled, making it standard for filaments.
Final Answer Tungsten