Your gadgets run on direct current, but the electricity in your home is alternating current. What’s up with that?

AC and DC power differ in direction, usage, and efficiency. Learn the basics of how alternating and direct current work and ...

Physics and Python stuff. Most of the videos here are either adapted from class lectures or solving physics problems. I ...

Upper KS2: Which circuit symbols can you see in the animation? (motor, buzzer, lightbulb, switch, cell*) What do you have in the classroom or at home that uses a battery?

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