Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 169 · 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 rubber band is an insulator. (a) True (b) False
2. 2.✏️ In a circuit diagram, which part is drawn as a dot where wires meet? (a) LED (b) battery (c) resistor (d) junction
3. 3.🔘 Which kind of switch slides side to side? (a) a reed switch (b) a push button (c) a slide switch (d) a toggle switch
4. 4.🔦 A circuit has a new cell, a good bulb and a switch that is ON. One wire has come loose from the cell. A gap in one wire is bridged by a copper wire. Does the bulb glow? (a) No (b) Yes
5. 5.🔋 How many volts does one ordinary torch cell give? (a) 0.5 V (b) 15 V (c) 1.5 V (d) 230 V
6. 6.True or false: to fly kites in open fields is safe. (a) False (b) True
7. 7.🔍 Which is the odd one out? (a) fly a kite near wires (b) use mains for a project (c) touch a switch when wet (d) take cells out after use
8. 8.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a brass key across the gap. Does the bulb glow? (a) Yes (b) No
9. 9.🔘 A cell and a bulb are joined to 3 side-by-side paths with one switch on each path — A, B and C (parallel). A is ON, B is OFF and C is ON. Does the bulb glow? (a) No (b) Yes
10. 10.Which of these mainly makes sound? (a) a ceiling fan (b) a night lamp (c) a rice cooker (d) a buzzer
11. 11.💡 A battery lights 5 identical bulbs joined in parallel. One more identical bulb is added in parallel. How do the bulbs glow now? (a) the same (b) brighter (c) dimmer
12. 12.✏️ In a cell symbol, which line is the + terminal? (a) both lines (b) the shorter line (c) neither line (d) the longer line
13. 13.Which of these is a conductor? (a) a plastic ruler (b) a dry cork (c) a glass marble (d) an iron nail
14. 14.💡 In a series circuit, how many paths does the current have? (a) one (b) one for each bulb (c) two (d) none
15. 15.🔘 Which kind of switch closes when tipped over? (a) a push button (b) a slide switch (c) a tilt switch (d) a reed switch
16. 16.🔋 3 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)? =
17. 17.⚠️ Is it safe to stay away from pylons? (a) safe (b) not safe
18. 18.🔍 Which is the odd one out? (a) an electric toy car (b) a night lamp (c) a street light (d) a traffic signal
19. 19.🔦 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 woollen thread. Does the bulb glow? (a) Yes (b) No
20. 20.⚠️ Is it safe to use mains for a project? (a) safe (b) not safe
21. 21.🔋 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)? =
22. 22.Which of these is not safe? (a) keep drinks far away (b) build with an adult near (c) climb an electric pole (d) take cells out after use
23. 23.✏️ In a circuit diagram, which part is drawn as a small empty box? (a) LED (b) wire (c) capacitor (d) resistor
24. 24.⚡ A solar panel changes which kind of energy into electricity? (a) sound energy (b) light energy (c) chemical energy (d) wind energy
25. 25.🔘 When a switch is ON, the circuit is … (a) open (b) cut (c) broken (d) closed
26. 26.💡 A battery lights 4 identical bulbs joined in series. One more identical bulb is added in series. How do the bulbs glow now? (a) brighter (b) dimmer (c) the same
27. 27.🔋 On a cell, does “the flat end” mean the + end or the − end? (a) − (negative) (b) + (positive)
28. 28.Which of these is an insulator? (a) a brass key (b) a cotton thread (c) aluminium foil (d) a safety pin
29. 29.🔘 A cell and a bulb are joined to 3 side-by-side paths with one switch on each path — A, B and C (parallel). A is ON, B is ON and C is OFF. Does the bulb glow? (a) No (b) Yes
30. 30.Which of these gives us electricity? (a) a refrigerator (b) a battery (c) an air conditioner (d) a television
31. 31.True or false: “each gets the full volts” is true of a parallel circuit. (a) False (b) True
32. 32.Which of these mainly gives out heat? (a) an electric toy car (b) an exhaust fan (c) an electric kettle (d) a traffic signal
33. 33.💡 5 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. Bulbs 1 and 3 are taken out of their holders. Does bulb 2 glow? (a) No (b) Yes
34. 34.🔦 A circuit has a new cell, a good bulb and a switch that is OFF. All the wires are firmly joined. A gap in one wire is bridged by a copper wire. Does the bulb glow? (a) No (b) Yes
35. 35.🔘 Which kind of switch closes near a magnet? (a) a reed switch (b) a tilt switch (c) a slide switch (d) a toggle switch
36. 36.🔋 6 identical 2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
37. 37.Which of these gives us electricity? (a) a cell (b) a computer (c) a washing machine (d) a water pump
38. 38.🔦 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) No (b) Yes
39. 39.Which drawing is the symbol for a voltmeter? (a) a circle with an X in it (b) a circle with A inside (c) triangle, bar and arrows (d) a circle with V inside
40. 40.Which of these mainly gives out light? (a) a street light (b) a toaster (c) an electric toy car (d) a room heater

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