What is the purpose of a fuse in an electrical circuit?

The purpose of a fuse in an electrical circuit is primarily to act as a safety device that removes power in the event of an overload. When the current flowing through the circuit exceeds a certain level, the fuse will heat up and then break the circuit, preventing further current flow. This action helps to protect the wiring and components in the circuit from damage due to excess current, which could otherwise lead to overheating, fires, or equipment failure.

While other options mention important functions such as preventing power supply ripple or limiting current to avoid shocks, these are not the primary functions of a fuse. The essential function of a fuse is to provide a safeguard against excessive current conditions by breaking the circuit, making it a crucial element for electrical safety. Therefore, the correct answer focuses on the role of the fuse in preventing damage from overloads.