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Question

Why do we need fuses? What can be used instead of a fuse? [2 MARKS]
 


Solution

Fuses: 1.5 Marks
Alternative: 0.5 Marks

Electrical fuses are wires made from special materials that melt quickly and break when large electric current is passed through them.
There is a maximum limit of current which can safely pass through the circuit. 
When a large amount of current passes through the circuit it may cause damage to various electric appliances.
The appliances may also catch fire due to short-circuit. 
So, fuses are used for safety purposes.

MCBs can be used instead of fuses.



 

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