What does a 5 A rating on a fuse mean?

Burns down if I < 5 A

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Melts if I > 5 A

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Can function only if I = 5 A

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Does not indicate anything

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Solution

The correct option is B
Melts if I > 5 A

5A rating on a fuse means that the fuse melts above a current of 5 A as fuses are used to cut the circuit once a current greater than the rating is passed through it.

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We, all have bought a fuse for our household. Ever wondered what the rating in the fuse actually means? Suppose you bought a fuse of rating 12, then it means that: