Question

What does a $5A$ rating on a fuse mean?

• A. Burns down if I < $5A$
• B. Melts if I > $5A$
• C. Can function only if I = $5A$
• D. Does not indicate anything

Answer 1

The correct option is B

Melts if I > $5A$

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