WBCS.LIVE practice question

Which element is used in the 'Filament' of an electric bulb?

Solve this multiple-choice question and check the correct answer with its explanation below.

Answer options

  1. Copper
  2. Aluminum
  3. Tungsten
  4. Iron

Correct answer and explanation

Correct answer: Tungsten

Explanation: āœ… Correct Answer: (C) Tungsten šŸ“š Explanation: Tungsten (W) is used as the filament in incandescent light bulbs because it has an extremely high melting point (approx. 3,422Ā°C). This allows the filament to glow white-hot without melting. Tungsten also has a high resistance to electric current, which causes it to produce light when electricity passes through it. The bulb is filled with an inert gas like Argon to prevent the filament from oxidizing.