voltage can carry current a further distance.
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Alternating current. Direct current is used in batteries.
v = volts a = alternating c = current vac is what the lights and appliances in your house use. Your TV uses 120VAC. 120vac is the accepted standard of electric current commonly used through out the U>S>. Vac speaks of ac or alternating current voltage.
AC current (alternating current) like in a wall outlet
DC or Direct Current. The current is no alternating.
An AC welding machine is one that uses electrical power from house or shop and has a controlled output in AC or Alternating Current.