Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 536 · 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.🔗 Series or parallel circuit: “many paths for current”? (a) series (b) parallel
2. 2.True or false: a night lamp mainly gives out light. (a) True (b) False
3. 3.🔘 A cell and a bulb are joined to two side-by-side paths: path 1 has switches A and B one after another, path 2 has switch C. A is ON, B is OFF and C is ON. Does the bulb glow? (a) No (b) Yes
4. 4.🔋 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)? =
5. 5.🔋 On a cell, does “the end with a bump” mean the + end or the − end? (a) − (negative) (b) + (positive)
6. 6.Which of these means the circuit is closed? (a) all wires are joined (b) the switch is OFF (c) a cell is taken out (d) a wire has come loose
7. 7.💡 A battery lights 3 identical bulbs joined in parallel. One more identical bulb is added in parallel. How do the bulbs glow now? (a) dimmer (b) the same (c) brighter
8. 8.True or false: a slide switch slides side to side. (a) True (b) False
9. 9.True or false: aluminium foil is an insulator. (a) True (b) False
10. 10.🔌 Most metals are good … (a) batteries (b) insulators (c) conductors (d) magnets only
11. 11.Which of these is an insulator? (a) a safety pin (b) aluminium foil (c) a steel coin (d) a woollen thread
12. 12.🔋 Cells joined + to − in a row (series) give … (a) a smaller voltage (b) no voltage (c) a bigger voltage (d) the same voltage
13. 13.True or false: if a wire has come loose, the circuit is closed and current flows. (a) True (b) False
14. 14.💡 5 identical bulbs are in parallel and each one takes 0.5 A. What total current (in amperes) comes from the battery? =
15. 15.🔍 Which is the odd one out? (a) a plastic straw (b) an iron nail (c) a glass marble (d) a cotton thread
16. 16.Which of these mainly makes movement? (a) an electric kettle (b) an exhaust fan (c) a night lamp (d) a street light
17. 17.💡 In a series circuit, how many paths does the current have? (a) two (b) one for each bulb (c) none (d) one
18. 18.Which of these is a conductor? (a) a woollen thread (b) a rubber band (c) a dry cork (d) an iron nail
19. 19.Which of these is true of a parallel circuit? (a) a single current path (b) a break stops every bulb (c) used in house wiring (d) one bulb out, all go out
20. 20.Which of these mainly gives out light? (a) a street light (b) an electric toy car (c) a table fan (d) a doorbell
21. 21.💡 A battery lights 2 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
22. 22.True or false: “a single current path” is true of a parallel circuit. (a) False (b) True
23. 23.🔋 On a cell, does “the shorter symbol line” mean the + end or the − end? (a) − (negative) (b) + (positive)
24. 24.🔋 Does an air conditioner give electricity or use electricity? (a) uses electricity (b) gives electricity
25. 25.🔘 Which kind of switch closes when tipped over? (a) a tilt switch (b) a toggle switch (c) a reed switch (d) a slide switch
26. 26.🔌 Is a woollen thread a conductor or an insulator? (a) a conductor (b) an insulator
27. 27.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a steel coin across the gap. Does the bulb glow? (a) No (b) Yes
28. 28.🔘 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
29. 29.⚡ What does a loudspeaker mainly change electricity into? (a) heat (b) light (c) movement (d) sound
30. 30.⚡ What does a buzzer mainly change electricity into? (a) heat (b) light (c) sound (d) movement
31. 31.🔗 Series or parallel circuit: “a single current path”? (a) parallel (b) series
32. 32.💡 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
33. 33.Which of these mainly makes movement? (a) a mixer grinder (b) a buzzer (c) a water heater (d) a torch
34. 34.True or false: on a cell, “the shorter symbol line” means the − (negative) end. (a) False (b) True
35. 35.🔘 Which kind of switch slides side to side? (a) a tilt switch (b) a slide switch (c) a toggle switch (d) a reed switch
36. 36.✏️ In a cell symbol, which line is the + terminal? (a) both lines (b) the longer line (c) the shorter line (d) neither line
37. 37.🔘 Switch A is on the main wire next to the cell and the bulb; then the wire splits into two side-by-side paths, one with switch B and one with switch C. A is OFF, B is OFF and C is ON. Does the bulb glow? (a) No (b) Yes
38. 38.💡 4 identical bulbs are joined in series with a battery and a closed switch on the main wire. Bulb 4 is taken out of its holder. How many bulbs glow?
39. 39.True or false: to poke things in a socket is not safe. (a) False (b) True
40. 40.⚠️ Is it safe to use mains for a project? (a) not safe (b) safe

Free electronics lessons, practice and worksheets at talentjr.in/electronics-for-kids