What is heating element of an electric bulb
Answers
A typical heating element is usually a coil, ribbon (straight or corrugated), or strip of wire that gives off heat much like a lamp filament. When an electric current flows through it, it glows red hot and converts the electrical energy passing through it into heat, which it radiates out in all directions.
The heating element of an electric bulb is it's filament which is made out of metals of high melting point, eg. nichrome,tungsten.
- These metals have very high amount of electrical resistance.
- And we know that
Amount of resistance is directly proportional to the amount of generated heat.
- Due to high resistance,a high amount of heat is also generated by these filaments and later light,heat is generated by these filaments as per the necessity.