There are two types of circuits possible. One is a DC Circuit and the other is an AC Circuit. A DC Circuit is a direct current in which the charge flows one way. For example my Kindle is a DC Circuit. When I charge it, the charges from the wall go into my phone. My phone doesn’t give charges back to the wall, making it a DC Circuit. An AC Circuit is an alternating current. A conventional current is the direction in which the positive charges flow. I also learned the reason why the band ACDC got its name and why they have a lightning bolt on all their merchandise.
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