What's the difference between AC and DC current?
What's the difference between AC and DC current?
user
Oh, I think AC stands for alternating current, and it’s what you get with, say, a wall outlet. DC stands for direct current, and it’s what you get when you charge a battery and put a direct current from it through a lightbulb.
assistant
You think? You should be always sure of your answer. You are correct though about what each of them means. I do wonder why we aren't using AC current for batteries and smaller devices. It seems more convenient to not worry about polarities.
user