Question

distinguish between ac and dc. show both of them graphically. give one advantage of ac over dc. what are the frequencies of ac in india and in USA​

Answer 1

Explanation:

Electric current flows in two ways: either in an alternating current (AC) or in a direct current (DC). In Alternating current, current keeps switching directions periodically – forward and backward. While in the direct current it flows in a single direction steadily. The main difference between AC and DC lies in the direction in which the electrons flow. In DC, the electrons flow steadily in a single direction while electrons keep switching directions, going forward and then backwards in AC. Let us learn more differences between them in the next few sections.