1. Introduction: The Fan That Spins From Electricity
Look up at the ceiling fan in your room. Press the switch, and it starts to turn. No one pushes it. No string is pulled. Electricity goes in, and somehow the blades spin.
How? What turns electricity into turning?
Inside that fan is a device called an electric motor — a machine that takes electric current and produces continuous rotation. The same machine spins the fan, the mixer-grinder in your kitchen, the water pump in the field, and the motor in a toy car.
In the previous topics you learned one powerful fact: a wire carrying current, sitting inside a magnetic field, feels a force. (A force is a push or a pull.) That single force is the seed of the whole motor. Our job now is to see how one push on a wire becomes a wheel that never stops turning.
This is a topic you draw to understand. By the end, you should be able to take a blank page and rebuild the motor diagram from memory — not copy it, but reconstruct it, because you know what every line is for.
You can now say what an electric motor does: it turns electric current into continuous rotation.