What is the function of an AC socket?

• A. A grounding device
• B. Device in a wall that an electric cord can be plugged into
• C. A device used to reduce current
• D. Inductor

Answer: (B)

An AC socket is the wall outlet that accepts a plug to connect a device to the building’s electrical wiring, providing access to mains power as alternating current. It serves as a simple, safe interface that lets the device draw the standard voltage and current it needs without generating or altering the power itself. Grounding features may be included for safety, helping protect against shocks, but the socket’s primary role is just to supply power through a convenient connection point. It is not used to reduce current, nor is it an inductor.