Coulomb's Law

Imagine you have two magnets. You know how they can either stick together or push each other away? Coulomb's law is like a secret code that explains this push and pull, but for tiny, invisible things called electric charges! It tells us how strong that push or pull will be. It's like a superpower that invisible things have!

A very smart scientist named Charles-Augustin de Coulomb lived a long, long time ago. He was super curious about these invisible forces. He used a special tool called a torsion balance, which was like a super-sensitive scale, to measure these tiny pushes and pulls. He did lots of experiments to figure out the rules of this electric game.

This law is super important because it helps us understand so many things! It's why lights turn on when you flip a switch, how your toys with batteries work, and even how your hair sticks to a balloon after you rub it. It's the secret behind all the amazing electronic gadgets we use every day!

Coulomb's law says that if you have two electric charges, they will either attract (pull together) or repel (push apart). If the charges are the same (both positive or both negative), they push away. If they are different (one positive and one negative), they pull together! The closer they are, the stronger the push or pull. The farther apart, the weaker it is.