Question

Filament of a bulb is

• A. a metal case
• B. metal tip at the centre of the base
• C. two thick wires
• D. a thin wire

Answer 1

The correct option is D

a thin wire

Light bulb

It is a device that produces light from electricity. It turns the electricity to light by sending current through a thin wire which we call filament.

The filament of a bulb

1. Inside the bulb, a spirally wounded wire supported by two thick wires at its end is called the filament of a bulb.
2. Most of the time it is made up of tungsten.
3. When we pass the electric current through the filament, it lightens ups and produces light.

The material used for the bulb.

We use thin wire which we often call filament of the bulb.

Hence, option D is the correct answer.