What does the acronym AC stand for in electrical terms?

The acronym AC stands for Alternating Current, which is a type of electrical current that reverses its direction periodically. In contrast to Direct Current (DC), which flows in a constant direction, AC is typically used for power distribution because it is more efficient for transmitting electricity over long distances. It allows for the use of transformers to increase or decrease voltage levels, making it suitable for various applications, including residential, commercial, and industrial settings. AC is the standard form of electricity supplied to homes and businesses, which is why understanding this term is crucial for anyone in the electrical field.