What is one advantage of using alternating current (AC) over direct current (DC) for power transmission?

One significant advantage of using alternating current (AC) for power transmission is its ability to allow for easier voltage transformation. This is largely due to the presence of transformers, which only work effectively with AC. By using transformers, AC voltage can be easily stepped up or stepped down to different levels as needed for efficient transmission over long distances. This characteristic makes AC more versatile and practical for electrical grids, as it can travel long distances at high voltages (reducing line losses) and then be converted to lower voltages for safe usage in homes and businesses.

This capability directly impacts the efficiency and safety of the overall power distribution system, and it is a key reason why AC has become the standard for electrical power transmission.