Why use AC

Why use AC:-

First reason of supplying AC to houses is historic. When Edison's company was sending electricity to houses in beginning, it was all DC. Later machines were produced that could produce electricity in much more efficient way and suppy at cheaper cost. Reason was obvious - Edison's rivals could use turbines to produce power with utmost ease and they could transmit power exteremly efficiently as AC uses sine waves.

Starting from that, transformers, stepping up and down of power became possible with AC, reducing the losses even further. Then there are other inherent advantages of AC such as you dont un-necessarily charge something up if a power cable is falling on something, there are ways to reduces losses in AC even further that are not at all there in DC and so on.