AC and DC

in and electrical current, there is something called Alternating Current (AC) and Direct Current (DC)

AC or Alternating Current is a current that flows in a different direction, or in the opposing direction

DC or Direct Current is a current that flows in the same way

some examples from them is that,switches that are from walls, like a refrigerator, washer, lights, and ovens are AC and electronics that are powered by a battery like a cell phone, flashlight are DC