AC versus DC power transmission (2 - Electricity Distribution)
Why is AC used more often than DC? And why are power lines usually at high voltages? Here I explain the history of alternating and direct current and work an example showing how high voltage transmission is more efficient in terms of line losses. Then I relate this to the use of AC for electricity distribution. Full edX course with interspersed practice problems to help you learn: https://www.edx.org/learn/electricity... Aaron Danner is a professor in the Department of Electrical and Computer Engineering at the National University of Singapore. https://www.ece.nus.edu.sg/stfpage/el... Video filmed and edited by Cheryl Lim. @randomcheryl
