Free Electricity Worksheets: Electrical Engineering for Kids - Free Printable

Let’s go through each item one by one and decide whether it runs on Main (meaning plugged into a wall outlet) or Batteries.

---

1. Clock with Roman numerals
→ This looks like a wall clock or alarm clock that usually plugs in. Some clocks use batteries, but this style is often main-powered. Let’s say Main.

2. Flashlight
→ Flashlights almost always run on batteries. You carry them around — they’re not plugged in. → Batteries

3. Small fan
→ This is a desk fan. Most small fans plug into the wall. → Main

4. Smartphone
→ Phones have rechargeable batteries inside. Even though you charge them from the wall, they run on battery power when unplugged. So for this task, we’ll say Batteries.

5. Laptop
→ Laptops also have internal batteries. They can run without being plugged in. → Batteries

6. Calculator
→ Many calculators use small button batteries or solar power. But since “solar” isn’t an option, and most basic calculators use batteries → Batteries

7. Light bulb
→ A regular light bulb needs to be screwed into a lamp or fixture that’s plugged in. It doesn’t have its own battery. → Main

8. Printer
→ Printers are big devices that plug into the wall. They don’t run on batteries. → Main

9. Toaster
→ Toasters must be plugged in to work. No toaster runs on batteries. → Main

10. Refrigerator
→ Fridges are large appliances that stay plugged in all the time. → Main

---

Now let’s double-check:

- Clock: Main ✔
- Flashlight: Batteries ✔
- Fan: Main ✔
- Phone: Batteries ✔
- Laptop: Batteries ✔
- Calculator: Batteries ✔
- Light bulb: Main ✔
- Printer: Main ✔
- Toaster: Main ✔
- Fridge: Main ✔

All make sense based on how these items are commonly used.

Final Answer:
Clock: Main
Flashlight: Batteries
Fan: Main
Phone: Batteries
Laptop: Batteries
Calculator: Batteries
Light bulb: Main
Printer: Main
Toaster: Main
Fridge: Main