An AC Power Jack is a socket designed to connect electrical devices to an alternating current (AC) power source. It allows devices like laptops, televisions, and other electronics to receive power from a wall outlet. The AC power jack typically features two or three prongs that fit into corresponding holes in the plug of the power cord. These jacks are commonly found in homes and offices, providing a convenient way to power various appliances. They are part of the broader electrical system that includes components like power cords, outlets, and transformers, which work together to ensure safe and efficient energy delivery.