Question

Filament of a torch bulb is ______.

Options

• a metal case.

• metal tip at the centre of the base.

• two thick wires.

• a thin wire.

Answer 1

Filament of a torch bulb is a thin wire.

Explanation:

• The filament is the part of the bulb that glows when electricity flows through it.

• It is a very thin wire, usually made of tungsten, because tungsten can withstand high temperatures.

• This thin wire is placed inside the bulb and is supported by two thicker wires that connect it to the power source.