Question

How does a torch bulb glow?

Answer 1

HEYYA FRND.
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In the most flashlights,having the lamp is
either a tungsten filament (incandescent bulb)

or a light-emitting diode (solid state bulb), also known as an LED.

Tungsten filament or LED brightness when electricity flows through it,

thus producing a visual light.

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THANK YOU
@SRK6

Answer 2

Hi,

Here's ur answer:-

When electricity flows through the light bulb,it is converted to heat energy. When the filament gets heated to a greater extent, it emits a white light or any other colour light depending upon the nature of the bulb or the gas that is used for illumination.

HOPE IT HELPED (^_^)