Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 105 · 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.True or false: a push button stays where you flip it. (a) True (b) False
2. 2.True or false: on a cell, “usually the red wire” means the − (negative) end. (a) True (b) False
3. 3.💡 A battery lights 4 identical bulbs joined in parallel. One more identical bulb is added in parallel. How do the bulbs glow now? (a) dimmer (b) brighter (c) the same
4. 4.Which of these uses electricity? (a) a bicycle dynamo (b) an air conditioner (c) a generator (d) a cell
5. 5.🔋 Does an air conditioner give electricity or use electricity? (a) gives electricity (b) uses electricity
6. 6.True or false: a night lamp mainly gives out heat. (a) True (b) False
7. 7.🔘 What does a switch do in a circuit? (a) makes electricity (b) stores current (c) changes the voltage (d) opens or closes the loop
8. 8.✏️ In a circuit diagram, which part is drawn as a straight line? (a) wire (b) battery (c) diode (d) bulb
9. 9.True or false: “used in house wiring” is true of a series circuit. (a) True (b) False
10. 10.True or false: to use small battery cells is safe. (a) False (b) True
11. 11.True or false: “own switch for each bulb” is true of a parallel circuit. (a) True (b) False
12. 12.🔋 How many 1.5 V cells must be joined in series to give 6 V?
13. 13.Which of these is true of a parallel circuit? (a) a single current path (b) one bulb out, all go out (c) many paths for current (d) bulbs share the voltage
14. 14.True or false: “one out, the rest glow” is true of a parallel circuit. (a) False (b) True
15. 15.🔌 Is a rubber band a conductor or an insulator? (a) an insulator (b) a conductor
16. 16.True or false: on a cell, “the shorter symbol line” means the + (positive) end. (a) True (b) False
17. 17.Which of these is true of a series circuit? (a) many paths for current (b) bulbs share the voltage (c) own switch for each bulb (d) each gets the full volts
18. 18.🔦 A circuit has a new cell, a good bulb and a switch that is ON. All the wires are firmly joined. A gap in one wire is bridged by a plastic straw. Does the bulb glow? (a) No (b) Yes
19. 19.Which of these is safe? (a) poke things in a socket (b) dry your hands first (c) open a phone charger (d) touch a switch when wet
20. 20.💡 A battery lights 2 identical bulbs joined in parallel. One more identical bulb is added in parallel. How do the bulbs glow now? (a) brighter (b) dimmer (c) the same
21. 21.True or false: “many paths for current” is true of a series circuit. (a) True (b) False
22. 22.🔘 A cell, a bulb and switches A and B are joined one after another in a single loop (series). A is OFF and B is OFF. Does the bulb glow? (a) Yes (b) No
23. 23.🔘 When a switch is ON, the circuit is … (a) closed (b) open (c) broken (d) cut
24. 24.Which of these is safe? (a) use mains for a project (b) use a cable with cuts (c) touch a fallen wire (d) stay away from pylons
25. 25.💡 3 identical bulbs are joined in parallel (each on its own side-by-side path) with a battery and a closed switch on the main wire. Bulb 2 is taken out of its holder. Does bulb 1 glow? (a) Yes (b) No
26. 26.🔍 Which is the odd one out? (a) poke things in a socket (b) touch a switch when wet (c) stay away from pylons (d) climb an electric pole
27. 27.⚠️ Someone is getting a shock and is still touching a wire. What should you do? (a) shout for an adult (b) wait and watch (c) pull them by the hand (d) pour water on them
28. 28.🔗 Series or parallel circuit: “one out, the rest glow”? (a) series (b) parallel
29. 29.Which drawing is the symbol for a bulb? (a) a small empty box (b) a circle with a cross (c) many long-short pairs (d) a dot where wires meet
30. 30.🔗 Series or parallel circuit: “used in house wiring”? (a) series (b) parallel
31. 31.🔌 Why are electric wires covered in plastic? (a) plastic is a conductor (b) plastic makes current (c) plastic is an insulator (d) to make them heavy
32. 32.💡 In a series circuit, how many paths does the current have? (a) one for each bulb (b) two (c) none (d) one
33. 33.💡 Old festival light strings went fully dark when one bulb failed. How were they joined? (a) not joined (b) in parallel (c) in series (d) by Wi-Fi
34. 34.🔦 A circuit has a new cell, a bulb with a broken filament and a switch that is ON. All the wires are firmly joined. Does the bulb glow? (a) Yes (b) No
35. 35.🔋 Identical cells side by side (in parallel) give … (a) no voltage (b) double the voltage (c) the same voltage (d) half the voltage
36. 36.Which of these is true of a parallel circuit? (a) bulbs share the voltage (b) a break stops every bulb (c) used in house wiring (d) a single current path
37. 37.🔗 Series or parallel circuit: “one bulb out, all go out”? (a) parallel (b) series
38. 38.💡 3 identical bulbs are joined in parallel (each on its own side-by-side path) with a battery and a closed switch on the main wire. Bulb 1 is taken out of its holder. How many bulbs glow?
39. 39.🔘 Two switches are in parallel (side by side). When does the bulb glow? (a) only when both are OFF (b) when either is ON (c) never (d) only when both are ON
40. 40.🔍 Which is the odd one out? (a) stay away from pylons (b) build with an adult near (c) throw cells in a fire (d) stop if a part gets hot

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