What was a significant result of the War of the Currents?

• A. Both AC and DC were adopted equally
• B. AC power became the standard for long-distance transmission
• C. Steam power was ultimately more efficient
• D. Only Edison’s methods prevailed

Answer: (B)

The choice that AC power became the standard for long-distance transmission is significant because it highlights the technological advancements and competitive dynamics of the late 19th century energy landscape. The War of the Currents was primarily a battle between two competing electrical systems: Thomas Edison’s Direct Current (DC) and Nikola Tesla and George Westinghouse’s Alternating Current (AC).

AC power was found to be more efficient for transmitting electricity over long distances due to its ability to use transformers to step up the voltage for transmission and then step it down for safe use. This capability allowed for the delivery of electricity to urban centers from centralized power plants located far away, thereby facilitating the expansion of power grids and making large-scale electrical distribution possible.

Consequently, the success of AC power in becoming the standard for long-distance transmission revolutionized the electricity industry and laid the groundwork for modern electrical systems. While other options may refer to aspects of the controversy or results related to steam power or Edison’s methods, none encapsulate the crucial shift towards AC power that emerged from this period.