Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 455 · 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.🔘 When a switch is ON, the circuit is … (a) broken (b) cut (c) open (d) closed
2. 2.⚡ Which tiny particles drift along a metal wire to carry the current? (a) electrons (b) water drops (c) dust particles (d) photons
3. 3.🔘 Which kind of switch flips up or down? (a) a slide switch (b) a push button (c) a toggle switch (d) a reed switch
4. 4.True or false: aluminium foil is an insulator. (a) False (b) True
5. 5.Which of these is a conductor? (a) a woollen thread (b) a rubber band (c) a plastic ruler (d) a copper wire
6. 6.🔋 A 6 V battery and three 1.5 V cells are joined in series, all facing the same way. What is the total voltage (in volts)? =
7. 7.⚠️ Someone is getting a shock and is still touching a wire. What should you do? (a) shout for an adult (b) pour water on them (c) pull them by the hand (d) wait and watch
8. 8.⚠️ Is it safe to use mains for a project? (a) safe (b) not safe
9. 9.Which of these means the circuit is closed? (a) a wire is cut (b) the bulb is unscrewed (c) a wire has come loose (d) the loop is complete
10. 10.💡 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
11. 11.🔋 On a cell, does “the longer symbol line” mean the + end or the − end? (a) + (positive) (b) − (negative)
12. 12.🔌 Most metals are good … (a) magnets only (b) conductors (c) insulators (d) batteries
13. 13.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a ceramic cup across the gap. Does the bulb glow? (a) Yes (b) No
14. 14.💡 4 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 3 is taken out of its holder. How many bulbs glow?
15. 15.🔗 Series or parallel circuit: “one bulb out, all go out”? (a) parallel (b) series
16. 16.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they get dimmer (b) they all go out (c) they explode (d) they keep glowing
17. 17.Which drawing is the symbol for an ammeter? (a) two or more cell symbols (b) a circle with a cross (c) a circle with A inside (d) triangle against a bar
18. 18.Which of these gives us electricity? (a) a mobile phone (b) a television (c) a computer (d) a generator
19. 19.🔍 Which is the odd one out? (a) a buzzer (b) a doorbell (c) a school bell (d) a rice cooker
20. 20.True or false: to keep drinks far away is not safe. (a) False (b) True
21. 21.🔋 On a cell, does “the end with a bump” mean the + end or the − end? (a) − (negative) (b) + (positive)
22. 22.True or false: on a cell, “usually the red wire” means the + (positive) end. (a) False (b) True
23. 23.True or false: “own switch for each bulb” is true of a parallel circuit. (a) False (b) True
24. 24.💡 Why is house wiring done in parallel? (a) each gets full voltage (b) so all go off together (c) to save copper only (d) to make bulbs dim
25. 25.🔘 Which kind of switch works only while pressed? (a) a push button (b) a slide switch (c) a reed switch (d) a toggle switch
26. 26.Which drawing is the symbol for a wire? (a) a circle with A inside (b) a circle with V inside (c) a straight line (d) a plain rectangle
27. 27.Which drawing is the symbol for an LED? (a) a straight line (b) a long and a short line (c) triangle, bar and arrows (d) a circle with M inside
28. 28.Which of these mainly makes sound? (a) an LED lamp (b) a tube light (c) an electric iron (d) a school bell
29. 29.💡 In a series circuit, how many paths does the current have? (a) two (b) none (c) one (d) one for each bulb
30. 30.🔘 Which kind of switch closes near a magnet? (a) a toggle switch (b) a tilt switch (c) a reed switch (d) a slide switch
31. 31.Which of these means the circuit is open? (a) all wires are joined (b) a wire has come loose (c) the loop is complete (d) the switch is ON
32. 32.🔋 Does a computer give electricity or use electricity? (a) uses electricity (b) gives electricity
33. 33.True or false: “bulbs share the voltage” is true of a series circuit. (a) False (b) True
34. 34.True or false: “each gets the full volts” is true of a parallel circuit. (a) True (b) False
35. 35.True or false: on a cell, “the longer symbol line” means the + (positive) end. (a) True (b) False
36. 36.🔌 Is a brass key a conductor or an insulator? (a) a conductor (b) an insulator
37. 37.🔋 Cells joined + to − in a row (series) give … (a) no voltage (b) a smaller voltage (c) a bigger voltage (d) the same voltage
38. 38.🔘 What does a switch do in a circuit? (a) makes electricity (b) opens or closes the loop (c) changes the voltage (d) stores current
39. 39.Which of these gives us electricity? (a) a cell (b) a mobile phone (c) a computer (d) a washing machine
40. 40.What does a tilt switch do? (a) closes when tipped over (b) slides side to side (c) flips up or down (d) works only while pressed

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