In electrical terms, what does 'AC' stand for?

In electrical terms, 'AC' stands for Alternating Current. This type of current is characterized by the flow of electric charge that periodically reverses direction. Unlike direct current (DC), where the flow of electrons is constant and unidirectional, alternating current varies in both magnitude and direction, making it more suitable for long-distance transmission of electricity.

The ability of AC to change direction allows for the efficient use of transformers, which can increase or decrease voltage levels. This capability is essential in power distribution systems, where it is common to transmit electricity at high voltages over long distances to reduce energy loss. Moreover, AC is used for most household electrical systems around the world, as it is easier and more cost-effective to generate and distribute compared to DC.

This understanding of AC is fundamental for anyone working with electrical systems, as it underpins many technologies and infrastructures we rely on today.