What is the main difference between AC and DC electricity?

The main difference between AC (Alternating Current) and DC (Direct Current) electricity lies in the direction of flow. With AC, the current changes direction periodically, which means it reverses its flow at regular intervals. This characteristic allows AC to be transmitted over long distances with greater efficiency, making it suitable for power distribution in homes and businesses.

In contrast, DC flows consistently in one direction. It is commonly used in batteries and electronic devices where a stable and steady current is needed. The nature of DC makes it ideal for circuits where devices require a constant voltage and current flow.

Understanding this difference is crucial, as it influences the application of each type of current in various electrical systems and devices.