The function of a fuse in an electric circuit is to
A
break the circuit when the current exceeds a certain value
B
save energy by reducing voltage
C
ensure that the current in the circuit exceeds a certain value
D
save energy by reducing the current
Verified Correct Answer: A.
Physical Principles & Numerical Solution
When the current flowing through the fuse exceeds its rated value, the fuse element melts, breaking the circuit and preventing further flow of electricity. This helps prevent overheating and potential fires.
Source: WAEC / JAMB / NECO Classroom Archive (Record #72027)