What is the function of an AC plug?

• A. AC socket
• B. Grounding adapter
• C. Device that allows electrically operated equipment to be connected to the ac power source
• D. Device that converts AC to DC

Answer: (C)

An AC plug is the connector on the end of a power cord that lets a piece of equipment draw electrical power from the wall outlet. It provides a safe, conductive path for the alternating current from the mains into the device when you plug it in. In three-prong designs, the extra pin adds grounding to improve safety by directing fault current away from you. The plug itself does not convert AC to DC; that conversion happens inside the device’s power supply or in an external adapter. It’s also not a grounding adapter, which is a separate accessory used to modify or provide grounding.