What does a surge protector do?

A surge protector is designed to safeguard electronic devices from voltage spikes or surges that can occur due to various factors, such as lightning strikes, power outages, or malfunctions within the electrical system. By blocking or diverting excess voltage away from connected devices, a surge protector helps to prevent damage that could compromise the functionality or safety of those devices.

The incorrect options highlight different functions that a surge protector does not perform. Surge protectors do not increase current flow, swap current types, or stabilize temperature. Instead, their primary role is focused on managing voltage levels, ensuring that sensitive electronics remain safe from potential damage caused by unexpected power surges.