AC and DC are two different methods of electric current flow.
Direct Current (DC) is a method in which the electric charge flows in only one direction, like the flow of a river. It is obtained from batteries, solar cells, and other sources. In DC, the voltage is always constant, and the electricity flows in a certain direction.
Alternating Current (AC) is a method in which the positive and negative sides are constantly switched periodically, and the direction of the flow of electricity changes accordingly. It is obtained from generators or outlets. In AC, the voltage periodically changes from positive to negative and from negative to positive, and the direction of the current also periodically changes accordingly.
The electricity produced at power plants and sent to homes is transmitted as AC. However, electronic devices such as computers and home appliances use DC power. AC is used to deliver power to houses, office buildings, etc. and is capable of powering electric motors used in refrigerators, washing machines, etc. . DC power is more consistent in terms of voltage delivery, meaning that most electronics rely on it and use DC power sources such as batteries. Electronic devices can also convert AC power from outlets to DC power by using a rectifier, often built into a devices power supply.
