What happens to a fuse when it blows out?

What happens to a fuse when it blows out?

• A. It resets automatically
• B. It melts or breaks
• C. It increases current flow
• D. It reduces voltage

Answer: (B)

When a fuse blows out, it melts or breaks due to an overload of electrical current. Fuses are designed to protect electrical circuits by interrupting the flow of electricity when the current exceeds a certain level. This overload can be caused by various factors, such as a short circuit or too many devices drawing power from a single circuit. When the current exceeds the safe limit, the wire inside the fuse heats up and ultimately melts, thereby breaking the circuit and preventing further electrical flow. This action protects wires and connected devices from damage that could be caused by excess current. The fusion of the wire is a critical safety feature, ensuring that potential hazards from overheating or electrical fires are minimized.

When a fuse blows out, it melts or breaks due to an overload of electrical current. Fuses are designed to protect electrical circuits by interrupting the flow of electricity when the current exceeds a certain level. This overload can be caused by various factors, such as a short circuit or too many devices drawing power from a single circuit. When the current exceeds the safe limit, the wire inside the fuse heats up and ultimately melts, thereby breaking the circuit and preventing further electrical flow. This action protects wires and connected devices from damage that could be caused by excess current. The fusion of the wire is a critical safety feature, ensuring that potential hazards from overheating or electrical fires are minimized.