Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 220 · 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 is the odd one out? (a) an LED lamp (b) a school bell (c) a buzzer (d) a siren
2. 2.True or false: a tilt switch slides side to side. (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) Yes (b) No
4. 4.🔘 Which kind of switch stays where you flip it? (a) a toggle switch (b) a tilt switch (c) a reed switch (d) a slide switch
5. 5.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a metal paper clip across the gap. Does the bulb glow? (a) No (b) Yes
6. 6.✏️ In a circuit diagram, wires are usually drawn as … (a) wavy lines (b) dotted circles (c) straight lines (d) little stars
7. 7.True or false: “bulbs share the voltage” is true of a series circuit. (a) True (b) False
8. 8.💡 Old festival light strings went fully dark when one bulb failed. How were they joined? (a) not joined (b) by Wi-Fi (c) in parallel (d) in series
9. 9.Which of these is an insulator? (a) a copper wire (b) a dry cork (c) aluminium foil (d) a steel coin
10. 10.True or false: a cotton thread is a conductor. (a) False (b) True
11. 11.🔦 A circuit has a used-up (dead) 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) Yes (b) No
12. 12.⚡ What does an exhaust fan mainly change electricity into? (a) heat (b) movement (c) light (d) sound
13. 13.⚡ A cell changes stored chemical energy into which kind of energy? (a) wind energy (b) nuclear energy (c) electrical energy (d) sound energy
14. 14.🔘 Two switches are in parallel (side by side). When does the bulb glow? (a) only when both are OFF (b) when either is ON (c) never (d) only when both are ON
15. 15.Which of these is true of a parallel circuit? (a) a single current path (b) one bulb out, all go out (c) many paths for current (d) bulbs share the voltage
16. 16.Which of these is a conductor? (a) a rubber eraser (b) a glass marble (c) a plastic ruler (d) a metal paper clip
17. 17.🔗 Series or parallel circuit: “one out, the rest glow”? (a) series (b) parallel
18. 18.🔋 Identical cells side by side (in parallel) give … (a) half the voltage (b) no voltage (c) the same voltage (d) double the voltage
19. 19.🔋 A 12 V battery and four 1.5 V cells are joined in series, all facing the same way. What is the total voltage (in volts)? =
20. 20.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a paper strip across the gap. Does the bulb glow? (a) No (b) Yes
21. 21.🔋 How many 1.2 V cells must be joined in series to give 2.4 V?
22. 22.💡 Why is house wiring done in parallel? (a) to save copper only (b) so all go off together (c) each gets full voltage (d) to make bulbs dim
23. 23.✏️ In a circuit diagram, which part is drawn as two or more cell symbols? (a) LED (b) bulb (c) switch (d) battery
24. 24.Which of these uses electricity? (a) a power station (b) a bicycle dynamo (c) a solar panel (d) a washing machine
25. 25.🔋 4 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)? =
26. 26.✏️ In a cell symbol, which line is the + terminal? (a) the shorter line (b) both lines (c) neither line (d) the longer line
27. 27.True or false: a toggle switch slides side to side. (a) True (b) False
28. 28.True or false: “one out, the rest glow” is true of a parallel circuit. (a) False (b) True
29. 29.Which of these uses electricity? (a) a television (b) a generator (c) a solar panel (d) a cell
30. 30.💡 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. Bulb 5 is taken out of its holder. How many bulbs glow?
31. 31.🔍 Which is the odd one out? (a) touch a switch when wet (b) use mains for a project (c) use a cable with cuts (d) stay away from pylons
32. 32.Which of these is not safe? (a) stop if a part gets hot (b) build with an adult near (c) stay away from pylons (d) use mains for a project
33. 33.True or false: “many paths for current” is true of a series circuit. (a) True (b) False
34. 34.True or false: an electric iron mainly gives out heat. (a) False (b) True
35. 35.🔌 Why are electric wires covered in plastic? (a) plastic is an insulator (b) to make them heavy (c) plastic is a conductor (d) plastic makes current
36. 36.True or false: a reed switch springs back when let go. (a) False (b) True
37. 37.🔋 Cells joined + to − in a row (series) give … (a) no voltage (b) a bigger voltage (c) the same voltage (d) a smaller voltage
38. 38.🔦 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 paper strip. Does the bulb glow? (a) No (b) Yes
39. 39.🔋 Does a computer give electricity or use electricity? (a) gives electricity (b) uses electricity
40. 40.🔗 Series or parallel circuit: “own switch for each bulb”? (a) parallel (b) series

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