Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 652 · 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 of these mainly makes movement? (a) a doorbell (b) a school bell (c) a table fan (d) an electric iron
2. 2.🔌 Is a glass marble a conductor or an insulator? (a) a conductor (b) an insulator
3. 3.🔋 On a cell, does “usually the black wire” mean the + end or the − end? (a) + (positive) (b) − (negative)
4. 4.🔋 On a cell, does “the shorter symbol line” mean the + end or the − end? (a) − (negative) (b) + (positive)
5. 5.🔘 When a switch is ON, the circuit is … (a) closed (b) cut (c) broken (d) open
6. 6.True or false: to fly a kite near wires is not safe. (a) True (b) False
7. 7.🔋 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)? =
8. 8.⚡ What does a ceiling fan mainly change electricity into? (a) light (b) movement (c) heat (d) sound
9. 9.✏️ Why do engineers draw circuits with symbols? (a) symbols are heavier (b) to hide the circuit (c) quick and clear for all (d) to make it colourful
10. 10.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they all go out (b) they get dimmer (c) they explode (d) they keep glowing
11. 11.🔋 How many volts does one ordinary torch cell give? (a) 0.5 V (b) 1.5 V (c) 15 V (d) 230 V
12. 12.🔍 Which is the odd one out? (a) poke things in a socket (b) throw cells in a fire (c) stay away from pylons (d) climb an electric pole
13. 13.🔋 How many 1.5 V cells must be joined in series to give 9 V?
14. 14.True or false: a dot where wires meet is the symbol for a junction. (a) False (b) True
15. 15.✏️ In a circuit diagram, which part is drawn as two or more cell symbols? (a) voltmeter (b) wire (c) diode (d) battery
16. 16.🔍 Which is the odd one out? (a) a graphite rod (b) a glass marble (c) a steel coin (d) aluminium foil
17. 17.True or false: if the loop is complete, the circuit is closed and current flows. (a) False (b) True
18. 18.True or false: a rubber band is a conductor. (a) True (b) False
19. 19.⚠️ Is it safe to poke things in a socket? (a) safe (b) not safe
20. 20.Which of these is a conductor? (a) a ceramic cup (b) a metal paper clip (c) a dry cork (d) a woollen thread
21. 21.🔗 Series or parallel circuit: “own switch for each bulb”? (a) series (b) parallel
22. 22.True or false: “each gets the full volts” is true of a series circuit. (a) False (b) True
23. 23.⚡ What does a traffic signal mainly change electricity into? (a) light (b) sound (c) movement (d) heat
24. 24.🔋 Does a generator give electricity or use electricity? (a) uses electricity (b) gives electricity
25. 25.🔁 In an old-style bulb, which thin wire glows when current flows? (a) the filament (b) the base (c) the glass (d) the switch
26. 26.⚠️ Someone is getting a shock and is still touching a wire. What should you do? (a) wait and watch (b) pull them by the hand (c) shout for an adult (d) pour water on them
27. 27.🔦 A circuit has a new cell, a good bulb and a switch that is ON. One wire has come loose from the cell. Does the bulb glow? (a) No (b) Yes
28. 28.🔍 Which is the odd one out? (a) use mains for a project (b) build with an adult near (c) climb an electric pole (d) use a cable with cuts
29. 29.🔗 Series or parallel circuit: “a single current path”? (a) series (b) parallel
30. 30.💡 6 identical bulbs are in parallel and each one takes 0.2 A. What total current (in amperes) comes from the battery? =
31. 31.True or false: a slide switch closes when tipped over. (a) False (b) True
32. 32.True or false: a school bell mainly gives out light. (a) True (b) False
33. 33.Which drawing is the symbol for a switch? (a) many long-short pairs (b) a circle with an X in it (c) a plain rectangle (d) a line lifted at a gap
34. 34.🔘 Which kind of switch slides side to side? (a) a reed switch (b) a tilt switch (c) a push button (d) a slide switch
35. 35.Which of these means the circuit is open? (a) the switch is ON (b) the loop is complete (c) all wires are joined (d) the bulb is unscrewed
36. 36.🔋 On a cell, does “the flat end” mean the + end or the − end? (a) + (positive) (b) − (negative)
37. 37.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put an iron nail across the gap. Does the bulb glow? (a) No (b) Yes
38. 38.Which of these mainly makes sound? (a) a ceiling fan (b) an electric toy car (c) a mixer grinder (d) a buzzer
39. 39.True or false: a straight line is the symbol for a switch. (a) True (b) False
40. 40.⚡ What does an LED lamp mainly change electricity into? (a) light (b) movement (c) sound (d) heat

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