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Electricity at home
Lower Sec Science · Secondary 2 · Medium · Electricity at home
A 2.0 A fuse is fitted in a phone charger. During a fault, a current of 3.5 A flows through the charger. What happens to the fuse and why?
- The fuse wire melts because the current exceeds its rating, opening the circuit.
- The fuse wire cools down because the current is below its rating, closing the circuit.
- Nothing happens because fuses only work when voltage increases.
- The fuse increases its resistance so that the current becomes 2.0 A.
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