🔍 Electricity Powers Everything!

Before we can talk about circuits or switches, let’s ask:
What even is electricity?
If we don’t understand the thing that powers everything from light bulbs to laptops, we’ll never understand computers.

So let’s begin with the real basics.

🔌 What Is Electricity?

Electricity is the movement of tiny bits called electrons. Electrons live inside atoms, and they can move from one atom to another if they’re pushed.

Imagine electrons like water in a pipe. When you push water at one end, it flows to the other. In the same way, electricity flows through wires when we push electrons.

This push is called voltage.
The flow is called current.

But the most important thing:
👉 Electricity is a way to send a signal—from one place to another.

That’s why computers use it: It’s fast, invisible, and easy to control.

🔋 Where Does Electricity Come From?

Electricity can come from:

• Batteries

• Power plants

• Solar panels

• Even rubbing certain materials together (static electricity)

But no matter the source, all we need is a flow of electrons to carry a message.

💡 Why Is It Useful?

Because electricity can move so fast—almost the speed of light—it lets computers send signals instantly. One small pulse can mean:

• “Yes” or “No”

• “On” or “Off”

• “True” or “False”

And that’s the beginning of binary communication.