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Q.

Fuse wire is a


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a

Tin-lead alloy

b

Copper-lead alloy

c

Tin-copper alloy

d

Silver-lead alloys 

answer is A.

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Detailed Solution

Concept: when the current is more , heat across the resistance is more so the fuse would have a low melting point i.e. it is a metal .
1- Fuse wire is used in  electrical instruments or circuits get prevent damage due to over current.
2- It helps a circuit to avoid getting short circuits or overloaded.
3- Fuse wire is made up of an alloy which has a very low melting point.
4- It is a metal wire .
So the fuse wire is made up of tin - lead .
Hence, the correct option is 1.
 
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Fuse wire is a