Mon Prof Augmenté
A Circuit That Lights a Bulb
Age 9 · Science
Electricity can only flow when it has a complete path to travel all the way around. This loop of parts makes that path, so the bulb lights up.
This picture is part of the full library
Every lesson is open to everyone for 7 days after it is published. This one came out on September 9, 2026: its text stays readable here, and its picture opens with a subscription.
The app is free. A subscription opens every lesson, in every school year.
Age 9: open this week
Browse Age 9
In the picture
- The battery, which pushes the electricity out and around the loop.
- The red wire, the path the electricity travels along.
- The bulb, which glows when electricity passes through its thin filament.
- The switch, with its lever pressed down so the loop is joined.
Examples
- A torch lights up when you slide its switch, joining the battery to the tiny bulb inside.
- A doorbell rings only while your finger holds the button down and closes the circuit.
Key takeaways
- Electricity flows only in a complete loop, from one end of the battery back to the other.
- A switch works by joining that loop or breaking it.
Quiz: A Circuit That Lights a Bulb (Age 9)
-
A bulb only lights up when the parts are joined in a certain way. What has to be true?
-
Someone lifts the lever on the switch so the two sides no longer touch. What happens to the bulb?
-
Which part gives the electricity the push that sends it all the way around the circuit?
The answers, each with its explanation, are in the app. This lesson has left the free week, so its quiz is part of the subscription.
Free app, optional subscription
App Store Google Play
Carry on in the app
At least one new illustrated lesson every weekday for your child’s year, with its quiz and a reminder at 6:15 pm.
Your child’s teacher does not use My Enhanced Teacher yet?
Tell them about it
