Difference between Electric fuse and Filament in bulb
Electric fuse
- Electric fuse is safety device used for domestic appliances.
- Electric fuse is connected in series with the live wire that carries current.
- Fuse works on works on the principle of heating effect of electric current.
- It consist of wire made up of an alloy of lead and tin has low melting point about 2000C
- When excess current passes through this fuse wire it gets heated immediately and melts due to overheating and disconnects the main circuit automatically so that we can prevent our appliances from getting damaged.
- Devices like miniature circuit breakers are nothing but moden fuse which being used for preventing the damage of appliances from overheating, short circuiting etc.
- The most commonly used electric fuse socket is shown below,
Filament in bulb
- Sir Thomas Edison invented the bulb in which filament made of tungsten is used.
- Filament in bulb works on works on the principle of heating effect of electric current.
- The filament used in bulb is made of tungsten whose melting point is around 34000
- When current passes through this filament, its temperature start rises and colour also changes to yellowish orange.
- Yellow colour emitted by filament of tungsten used as sources of light during darkness of night.
- The glass coating is provided with noble gas so that the heat produced in the bulb can get absorbed.
- The most commonly used bulb type is shown below,