Phase:

AN AC REPEATS SAME WAVE TRACE OVER AND OVER. Each 360° cycle is similar to every other. The wave may have any imaginable shape, but as the polarity reverses periodically, and every cycle is the same, the wave can be called as true alternating current.

Here, you will learn more about the most common  type of alternating current, the sine wave. You will get an in-depth look at way engineers and technicians think of alternating current sine waves. There will be a discussion of circular-motion model of the sine wave. You will see how these waves get added, and how they cancel out.