What is an electromagnet and how can electricity make a magnet?
Magnet Light Switch
What is an electromagnet and how can electricity make a magnet?
Here's a small wonder you can build on a kitchen table: a magnet you can switch ON and OFF. Flick the power, and it grabs paperclips. Flick it off, and they tumble loose. It's called an electromagnet, and the trick behind it is one of the sneakiest secrets in all of physics.
First, let's meet the hidden ingredient. Electricity isn't some mysterious goo in the wire — it's a crowd of tiny particles called electrons, all marching the same direction. We call that marching parade a current. Picture commuters streaming down a hallway, shoulder to shoulder, all heading for the same door.
