Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 45 · 40 questions

Remember (Find the topic, use the idea): Find the topic: energy, safety, conductor, closed loop, switches, cells, symbols, series or parallel. Use that lesson’s idea — complete loop, all ON for series, cells add up, one path or many. For sums, write the working and check it again.

1. 1.🔍 Which is the odd one out? (a) open a phone charger (b) touch a switch when wet (c) poke things in a socket (d) dry your hands first
2. 2.💡 Old festival light strings went fully dark when one bulb failed. How were they joined? (a) in parallel (b) in series (c) not joined (d) by Wi-Fi
3. 3.True or false: to use a cable with cuts is not safe. (a) True (b) False
4. 4.🔋 How many 1.2 V cells must be joined in series to give 2.4 V?
5. 5.💡 A battery lights 5 identical bulbs joined in series. One more identical bulb is added in series. How do the bulbs glow now? (a) the same (b) brighter (c) dimmer
6. 6.🔋 7 identical 1.5 V cells are joined in series, but one of them is put in the wrong way round. What is the total voltage now (in volts)? =
7. 7.🔍 Which is the odd one out? (a) touch a fallen wire (b) touch a switch when wet (c) build with an adult near (d) throw cells in a fire
8. 8.🔋 Does an air conditioner give electricity or use electricity? (a) uses electricity (b) gives electricity
9. 9.Which of these is a conductor? (a) a dry cork (b) a copper wire (c) a rubber band (d) a paper strip
10. 10.⚠️ Is it safe to stop if a part gets hot? (a) safe (b) not safe
11. 11.⚠️ Is it safe to keep drinks far away? (a) safe (b) not safe
12. 12.True or false: a rice cooker mainly gives out light. (a) True (b) False
13. 13.True or false: to open a phone charger is safe. (a) False (b) True
14. 14.Which of these is true of a parallel circuit? (a) bulbs share the voltage (b) a break stops every bulb (c) a single current path (d) one out, the rest glow
15. 15.🔗 Series or parallel circuit: “one bulb out, all go out”? (a) parallel (b) series
16. 16.⚡ A fan changes electrical energy mainly into which kind of energy? (a) chemical energy (b) movement energy (c) sound energy (d) light energy
17. 17.Which drawing is the symbol for a voltmeter? (a) a circle with V inside (b) one tall, one short bar (c) a straight line (d) a long and a short line
18. 18.True or false: “one out, the rest glow” is true of a series circuit. (a) True (b) False
19. 19.✏️ Why do engineers draw circuits with symbols? (a) to make it colourful (b) to hide the circuit (c) symbols are heavier (d) quick and clear for all
20. 20.True or false: an electric toy car mainly gives out light. (a) True (b) False
21. 21.⚡ What does a tube light mainly change electricity into? (a) movement (b) sound (c) heat (d) light
22. 22.🔌 Is a steel spoon a conductor or an insulator? (a) an insulator (b) a conductor
23. 23.🔋 How many 1.5 V cells must be joined in series to give 12 V?
24. 24.True or false: to stop if a part gets hot is not safe. (a) True (b) False
25. 25.True or false: if a wire has come loose, the circuit is closed and current flows. (a) False (b) True
26. 26.True or false: a tilt switch closes near a magnet. (a) True (b) False
27. 27.⚠️ Is it safe to climb an electric pole? (a) not safe (b) safe
28. 28.💡 4 identical bulbs are joined in series with a battery and a closed switch on the main wire. Bulb 1 is taken out of its holder. Does bulb 4 glow? (a) No (b) Yes
29. 29.💡 4 identical bulbs are joined in series with a battery and a closed switch on the main wire. Bulb 3 is taken out of its holder. Does bulb 1 glow? (a) Yes (b) No
30. 30.True or false: a night lamp mainly gives out heat. (a) False (b) True
31. 31.🔘 Which kind of switch flips up or down? (a) a push button (b) a reed switch (c) a toggle switch (d) a tilt switch
32. 32.True or false: triangle, bar and arrows is the symbol for an LED. (a) False (b) True
33. 33.🔌 Is a plastic ruler a conductor or an insulator? (a) a conductor (b) an insulator
34. 34.🔌 Why are electric wires covered in plastic? (a) plastic is a conductor (b) plastic is an insulator (c) to make them heavy (d) plastic makes current
35. 35.🔘 When a switch is ON, the circuit is … (a) closed (b) open (c) broken (d) cut
36. 36.💡 3 identical bulbs are joined in series with a 6 V battery (ideal wires). How many volts does each bulb get? =
37. 37.Which drawing is the symbol for a bulb? (a) triangle against a bar (b) a straight line (c) a circle with a cross (d) two equal parallel lines
38. 38.True or false: to dry your hands first is not safe. (a) True (b) False
39. 39.What does a push button do? (a) closes when tipped over (b) stays where you flip it (c) flips up or down (d) works only while pressed
40. 40.True or false: a ceramic cup is a conductor. (a) True (b) False

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