What is an electric circuit and why does a bulb need a complete loop?
The Endless Parade
What is an electric circuit and why does a bulb need a complete loop?
Flip a switch, and light appears like magic. But it isn't magic — it's a tiny parade of electric charges, marching in a loop, doing an honest day's work. Let's follow the parade.
An electric circuit is just a road for electricity to travel on. A battery pushes, a wire carries, and a bulb glows along the way. Think of it as a racetrack — but the racers are invisible little charges, and they never stop running as long as the track is whole.
