ELI5: How does electricity work?

Electricity is the invisible energy created when tiny, energetic particles called electrons jump from one atom to another, flowing together like a river through a wire.

Everything in the world is made of tiny building blocks called atoms, and inside every atom are even tinier parts called electrons. Most of the time, electrons stay put, but when a push comes from a battery or a power plant, they get excited and start zooming forward.

To picture how this works in your home, imagine a garden hose:

• The wire inside your wall is like the hose.
• The electrons are like the drops of water packed inside it.
• The wall plug acts like the water faucet, giving the water a strong push.
• The light switch is the nozzle at the end; when you turn it on, the water shoots out, but when you close it, the flow stops instantly.

In your everyday life, these moving electrons can do three main magical tricks:

• Make light: In a lamp, the electrons squeeze through a very tight space, making it glow bright and hot.
• Make heat: Inside a toaster, the electrons push against heavy resistance, heating up the metal coils until they turn orange and toast your bread.
• Make movement: Inside a blender or a toy car, the flow of electrons creates a hidden magnetic force that spins a motor, chopping up fruit or making wheels roll.