Line of force

Imagine you have a big, invisible magnet in your hand. When you hold the magnet close to a metal object, such as a paperclip, it jumps onto the magnet, right? But have you ever wondered why the paperclip flies towards the magnet? That's because the magnet produces something called "line of force."

You can think of line of force as invisible lines that come out of the magnet and create a powerful pull towards the magnet. They're like the strings that keep a balloon tied to your wrist or a kite in the sky. The lines of force connect the magnet to the paperclip and pull them together.

Now, imagine the magnet has a shape. Maybe it's a horseshoe magnet or a bar magnet. The lines of force will follow the shape of the magnet, flowing out of one end and curving back to the other end, like a boomerang. The closer the metal object is to the magnet, the more lines of force it will encounter, and the stronger the pull will be.

Line of force is a way to understand magnetism and how it works. It's like a secret force that you can't see, but it's there, helping magnets attract metal objects.