Which of the following is a primary function of a surge protector?

A surge protector is primarily designed to limit voltage spikes that can occur in electrical circuits. Voltage spikes can be caused by various factors, including lightning strikes, power outages, or the sudden turn-on or turn-off of electrical devices. When such spikes occur, they can exceed the normal voltage levels of the electrical system, potentially damaging sensitive electronic equipment.

Surge protectors function by diverting excess voltage away from connected devices, allowing only a safe level of voltage to pass through. This helps protect electronic components from damage, ensuring their longevity and functionality.

In contrast, increasing electrical flow, grounding circuits, and transforming voltage levels are roles not associated with surge protectors. Increasing electrical flow might pertain to amplifiers or transformers, grounding is related to safety measures for preventing electric shocks, and transforming voltage levels usually involves transformers that change voltage for distribution or usage purposes. These distinctions highlight the specific and crucial role that surge protectors play in safeguarding electrical systems.