Free practice on Telecommunications for Class 5, following the Cameroon primary school curriculum (English subsystem). Every answer is explained, so a parent who is not sure of the answer can still help.
The operating system of a telephone allows people to communicate through voice signals sent over distance. A radio receives broadcast signals and turns them into sound.
| Device | How it works |
|---|---|
| Telephone | Sends voice signals over distance |
| Radio | Receives broadcast signals as sound |
Producing a miniature radio, phone or TV model in class helps pupils understand how real devices work. Using telecommunication devices responsibly means respecting others and not misusing them.
📻 A miniature radio model
The operating system of a telephone allows people to communicate mainly through:
Answer: A. voice signals sent over distance
Producing a miniature radio, phone or TV model in class helps pupils to:
Answer: B. understand how real telecommunication devices work
A television broadcasts signals that are converted into:
Answer: C. pictures and sound
Using telecommunication devices responsibly includes:
Answer: D. respecting others and not misusing the device
Which of these best shows how a camera in a phone works?
Answer: A. It captures light to create a picture
The app holds every question on this page and hundreds more, works with no internet after the first load, and costs nothing. It fits on a shared phone.
