Filament of a torch bulb is
$(a)$. a metal case
$(b)$. metal tip at the centre of the base
$(c)$. two thick wires
$(d)$. a thin wire.

The filament of a bulb is a thin wire that glows when the current is passed through it.

So, option $(d)$ is correct.

Updated on: 10-Oct-2022


Kickstart Your Career

Get certified by completing the course

Get Started