Physicseasy · Past Paper
The filament of an electric bulb is usually made of:
ACopper
BIron
CTungsten
DNichrome
✓ Correct Answer: C — Tungsten
Tungsten is used because it has a very high melting point, allowing it to glow brightly without melting.
Share this question
More from Physics
- A machine of efficiency 80% is used to lift a 100 N load through 2 m. The work input is:
- The Odometer of a car measures:
- A bullet of mass 10 g is fired with a velocity of 100 m/s. Its kinetic energy is:
- Newton's third law of motion applies to:
- A ray of light is incident on a plane mirror. If the mirror is rotated by 10 degrees, the reflected ray rotates by: