What is one major advantage of AC over DC?

Voltage regulation is indeed easier with transformers, which is one of the primary advantages of alternating current (AC) systems over direct current (DC) systems. In AC systems, the voltage can be easily changed using transformers, allowing it to be stepped up or stepped down as needed. This capability is crucial for efficient power transmission over long distances. Higher voltages reduce the current for the same power level, which minimizes energy losses due to resistance in the transmission lines. This means that electricity can be transmitted efficiently from power plants to homes and businesses, where the voltage can then be lowered to a usable level.

In contrast, DC transmission presents challenges with voltage regulation because direct current cannot be easily transformed into higher or lower voltages. As a result, managing voltage levels over long distances becomes more complicated and less efficient. Understanding the capability of transformers in AC circuits clarifies how they enhance the reliability and efficiency of power distribution systems, making AC the preferred choice for most electrical grid applications.