Explain the working of an electric fuse ?
Answers
Electric Fuse works on the Heating Effect of Current. When the excess amount of current running then the Fuse break down the circuit.
Answer:
To prevent electric appliances from getting damaged from an excessive flow of
current, a safety device called a fuse is used in the electric circuit.
An electric fuse prevents a large amount of current from flowing into any
appliance or device as it cuts off the supply of electric current, thus preventing
further damage.
The electric fuse works on the principle of heating effect of current.
The amount of heating caused depends on the amount of current flowing
through the wire.
The greater the current, the more is the heat produced.
An electric fuse consists of a thin wire usually placed inside a glass or ceramic
cartridge.
The wire is made of a material that melts easily when heated.
Examples of material used for fuse wire are lead, tin, alloys of lead and tin,
aluminium, zinc, etc.
It is designed such that only a certain amount of current can flow through it.
If the current exceeds this amount, the heating in the wire causes it to melt.
This breaks the circuit and stops the flow of current in the circuit.
Explanation: