Final answer:
A fuse is the device that prevents excessive current from passing through a circuit by melting and breaking the connection when the current is too high. so, option 4 is the correct answer.
Step-by-step explanation:
The device that prevents excessive current from passing through a circuit is a fuse. A fuse is made up of a short piece of wire that has a low melting point and is designed to break, or blow, when the current exceeds a certain level, thereby protecting the rest of the circuit. It's important to replace a blown fuse to restore the circuit functionality. Other devices in circuits, like resistors, limit the flow of charge, but do not serve the same protective role as fuses against high currents.
A fuse is a device that prevents excessive current from passing through a circuit by interrupting the flow of current and preventing overheating.
A fuse is the device that prevents excessive current from passing through a circuit. It is a short piece of wire between two contacts that heats up and breaks when the current reaches a certain level. Fuses protect the circuit by interrupting the flow of current and preventing overheating.