AC (Alternating Current)

Current is the flow of electrons through a metallic circuit, with the direc-

tion of flow being from positive (+) pole to negative ( ) pole outside of the source (generator or battery).

Direct current (DC) travels in one direction, only, while alternating current (AC) travels in both directions across the circuit. A continuous flow of AC current travels first in one direction and then reverses polarity and flows in the opposite direction. See also current, DC, and polarity.

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