交变电流又称交流电（alternating [ˈɔltərˌneɪt] current [ˈkɚrənt, ˈkʌr-]），简称为AC。 交流电也称“交变电流”，简称“交 …
Alternating current (AC) is a flow of electric charge that periodically reverses. Learn how AC is used for power …
An alternating current (AC) is defined as an electric current that changes direction and magnitude periodically. Unlike direct current (DC), which flows in one direction, AC transmits power over long distances with less energy loss. Most household appliances use AC when plugged into a wall socket.….
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