| MadSci Network: Engineering |
Dear Rob, Alternating current or AC is electric current that reverses direction of flow at regular intervals. Most modern appliances that are plugged in use this type of current. Electricity supplied by the electric company also use AC. Direct current or DC is electric current that flows in 1 direction. Appliances that run on batteries use direct current. For more detailed explanation, see http://www.whatis.com/ac.htm Bonnie.
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