Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 564 · 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 copper wire is a conductor. (a) False (b) True
2. 2.🔋 How many 1.2 V cells must be joined in series to give 7.2 V?
3. 3.🔍 Which is the odd one out? (a) a siren (b) a buzzer (c) an electric drill (d) a doorbell
4. 4.True or false: “one out, the rest glow” is true of a parallel circuit. (a) False (b) True
5. 5.🔋 Cells joined + to − in a row (series) give … (a) the same voltage (b) a bigger voltage (c) no voltage (d) a smaller voltage
6. 6.🔗 Series or parallel circuit: “one bulb out, all go out”? (a) parallel (b) series
7. 7.⚡ What does a torch mainly change electricity into? (a) heat (b) sound (c) light (d) movement
8. 8.⚡ Which tiny particles drift along a metal wire to carry the current? (a) water drops (b) photons (c) electrons (d) dust particles
9. 9.Which of these means the circuit is closed? (a) the switch is OFF (b) the bulb is unscrewed (c) all wires are joined (d) a wire is cut
10. 10.🔦 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 wooden stick. Does the bulb glow? (a) No (b) Yes
11. 11.✏️ In a circuit diagram, which part is drawn as a long and a short line? (a) diode (b) battery (c) LED (d) cell
12. 12.🔋 On a cell, does “the longer symbol line” mean the + end or the − end? (a) + (positive) (b) − (negative)
13. 13.⚠️ Is it safe to dry your hands first? (a) safe (b) not safe
14. 14.🔘 Which kind of switch flips up or down? (a) a reed switch (b) a push button (c) a toggle switch (d) a slide switch
15. 15.True or false: a tube light mainly gives out heat. (a) False (b) True
16. 16.🔍 Which is the odd one out? (a) build with an adult near (b) take cells out after use (c) climb an electric pole (d) stop if a part gets hot
17. 17.💡 3 identical bulbs are joined in series with a battery and a closed switch on the main wire. All the bulbs are in place. How many bulbs glow?
18. 18.🔋 What should you do with used-up cells? (a) throw them in a fire (b) cut them open (c) give them for recycling (d) bury them in soil
19. 19.✏️ In a circuit diagram, which part is drawn as many long-short pairs? (a) ammeter (b) bulb (c) LED (d) battery
20. 20.🔌 Is a copper wire a conductor or an insulator? (a) an insulator (b) a conductor
21. 21.🔘 When a switch is ON, the circuit is … (a) open (b) cut (c) broken (d) closed
22. 22.🔋 8 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)? =
23. 23.⚠️ Who should be with you when you build a circuit? (a) nobody (b) a trusted adult (c) a younger child (d) a stranger online
24. 24.🔍 Which is the odd one out? (a) a plastic ruler (b) a woollen thread (c) a paper strip (d) a metal paper clip
25. 25.⚠️ Is it safe to build with an adult near? (a) safe (b) not safe
26. 26.⚠️ Is it safe to use small battery cells? (a) not safe (b) safe
27. 27.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a wooden stick across the gap. Does the bulb glow? (a) Yes (b) No
28. 28.🔌 Is a dry cork a conductor or an insulator? (a) an insulator (b) a conductor
29. 29.🔘 A bulb and a cell are joined through 4 switches on 4 side-by-side paths, one switch on each path (parallel). What is the smallest number of switches that must be ON to light the bulb?
30. 30.🔍 Which is the odd one out? (a) a dry cork (b) a steel coin (c) an iron nail (d) aluminium foil
31. 31.Which drawing is the symbol for a switch? (a) a line lifted at a gap (b) a dot where wires meet (c) a circle with a cross (d) a circle with an X in it
32. 32.Which of these is safe? (a) throw cells in a fire (b) use small battery cells (c) use a cable with cuts (d) climb an electric pole
33. 33.🔘 Two switches are in series. When does the bulb glow? (a) when either is ON (b) when both are OFF (c) never (d) when both are ON
34. 34.True or false: on a cell, “the longer symbol line” means the − (negative) end. (a) True (b) False
35. 35.🔍 Which is the odd one out? (a) throw cells in a fire (b) touch a fallen wire (c) stop if a part gets hot (d) climb an electric pole
36. 36.🔍 Which is the odd one out? (a) take cells out after use (b) touch a switch when wet (c) use mains for a project (d) use a cable with cuts
37. 37.What does a tilt switch do? (a) stays where you flip it (b) springs back when let go (c) flips up or down (d) closes when tipped over
38. 38.💡 6 identical bulbs are joined in series with a battery and a closed switch on the main wire. Bulb 6 is taken out of its holder. How many bulbs glow?
39. 39.True or false: “each gets the full volts” is true of a series circuit. (a) True (b) False
40. 40.🔁 In an old-style bulb, which thin wire glows when current flows? (a) the base (b) the switch (c) the glass (d) the filament

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