Physics
Grade-7
Easy
Question
The wire used in a fuse has
- Average melting point
- Low melting point
- High melting point
- All of these
Hint:
Low melting point
The correct answer is: Low melting point
A fuse wire should have high resistance and low melting point so that it prevents current higher than the prescribed value to pass. Low melting point will let it to break when high current passes through it because of the heat generated.
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