This cycle is repeated continuously as long as the AC is flowing in the circuit. Alternating Current is different from direct current (DC) as DC flows only in one direction. The generation and transmission of AC are very easy as compared to DC. (Full form of AC) So, it is the AC that is used in mains-wired buildings such as homes, offices, factories and other buildings.
AC is also used in electric motors that convert electric energy into mechanical energy. Electric motors are present in various electrical appliances like washing machines, refrigerators, etc.