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Simple circuits

3rd grade (Year 4 in England) · 16 questions · Common Core: NGSS.4-PS3-2, NGSS.4-PS3-4 · England: KS2 Y4 Electricity

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Score/ 16

1
Question 1
What happens if you add a second bulb in series with the first (same cell)?
- A. Both bulbs are dimmer
- B. The cell gets stronger
- C. Only one lights
- D. Both bulbs are brighter
2
Question 2
Look at the circuit. Will the bulb light?
- A. yes
- B. no
3
Question 3
Circuits: which statement is NOT true?
- A. Adding more cells makes a bulb brighter.
- B. An open switch stops the current.
- C. A circuit must be complete for current to flow.
- D. Batteries are safe to put in your mouth.
4
Question 4
What happens if you add a second bulb in series with the first (same cell)?
- A. Both bulbs are dimmer
- B. Both bulbs are brighter
- C. Only one lights
- D. The cell gets stronger
5
Question 5
Look at the circuit. Will the bulb light?
- A. yes
- B. no
6
Question 6
Circuits: which statement is NOT true?
- A. Adding more cells makes a bulb brighter.
- B. A circuit must be complete for current to flow.
- C. An open switch stops the current.
- D. A bulb lights with just one wire to the cell.
7
Question 7
What happens if you add a second bulb in series with the first (same cell)?
- A. Both bulbs are dimmer
- B. The cell gets stronger
- C. Only one lights
- D. Both bulbs are brighter
8
Question 8
Look at the circuit. Will the bulb light?
- A. yes
- B. no
9
Question 9
Circuits: which statement is NOT true?
- A. A circuit must be complete for current to flow.
- B. Electricity is used up as it goes round a circuit, so less comes back.
- C. An open switch stops the current.
- D. Adding more cells makes a bulb brighter.
10
Question 10
Why should you never poke anything into a mains socket?
- A. It might break the toy
- B. It is not dangerous
- C. Sockets have no electricity
- D. Mains electricity can give a dangerous, even deadly, electric shock
11
Question 11
Look at the circuit. Will the bulb light?
- A. yes
- B. no
12
Question 12
Circuits: which statement is NOT true?
- A. Electricity is used up as it goes round a circuit, so less comes back.
- B. A cell (battery) pushes the current around a circuit.
- C. An open switch stops the current.
- D. Adding more cells makes a bulb brighter.
13
Question 13
What does a switch do in a circuit?
- A. It changes the battery
- B. It opens or closes a gap, turning the circuit off or on
- C. It makes the bulb brighter
- D. It stores electricity
14
Question 14
Look at the circuit. Will the bulb light?
- A. yes
- B. no
15
Question 15
Circuits: which statement is NOT true?
- A. An open switch stops the current.
- B. A cell (battery) pushes the current around a circuit.
- C. Adding more cells makes a bulb brighter.
- D. Batteries are safe to put in your mouth.
16
Question 16
What does a switch do in a circuit?
- A. It changes the battery
- B. It stores electricity
- C. It opens or closes a gap, turning the circuit off or on
- D. It makes the bulb brighter

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Answer key: Simple circuits

1. A. Both bulbs are dimmer
2. B. no
3. D. Batteries are safe to put in your mouth.
4. A. Both bulbs are dimmer
5. B. no
6. D. A bulb lights with just one wire to the cell.
7. A. Both bulbs are dimmer
8. B. no
9. B. Electricity is used up as it goes round a circuit, so less comes back.
10. D. Mains electricity can give a dangerous, even deadly, electric shock
11. B. no
12. A. Electricity is used up as it goes round a circuit, so less comes back.
13. B. It opens or closes a gap, turning the circuit off or on
14. B. no
15. D. Batteries are safe to put in your mouth.
16. C. It opens or closes a gap, turning the circuit off or on