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Q.

What is a fuse made of?


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a

Tin and Lead

b

Zinc and Copper

c

Lead and Zinc

d

Copper and Tin 

answer is A.

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Detailed Solution

This is because tin and lead has high resistivity and low melting point. So, when short circuit takes place it can melt easily. Therefore when excess flow of current passes through the fuse wire it will not damage the appliances because a fuse wire is used to break the circuit when load is high. Hence, a fuse wire is used to increase the voltage and to prevent insulation.
   
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