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A B C D E F G H I J K L M N O P Q R S T U V W X Y Z 0-9

Alternating Current (AC)
Electrical current flow that reverses direction on a periodic basis. This is the way our normal household electricity works. Alternating the current flow makes it easier for electrical power to be efficiently distributed over vast distances. In the United States our current changes direction at a rate of 60 times per second (60 Hz). Audio signals are also alternating, with the frequencies corresponding to the frequencies of the sounds present.

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