Multiple choice

Why is tungsten used as a filament in electric bulbs?

  1. Due to high resistance

  2. Due to low resistance

  3. Both (1) & (2)

  4. None of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Tungsten is used as a filament primarily because it has high electrical resistance, which causes it to heat up and glow when current passes through it. While low resistance is also important for other applications, for a filament to produce light, high resistance is the key property that generates the necessary heat and light emission.

Keep practicing — related questions