Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 464 · 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.🔘 What does a switch do in a circuit? (a) stores current (b) changes the voltage (c) makes electricity (d) opens or closes the loop
2. 2.🔘 Two switches are in parallel (side by side). When does the bulb glow? (a) only when both are OFF (b) only when both are ON (c) when either is ON (d) never
3. 3.🔌 Is a glass marble a conductor or an insulator? (a) a conductor (b) an insulator
4. 4.Which of these is a conductor? (a) a ceramic cup (b) a rubber eraser (c) a dry cork (d) a steel spoon
5. 5.⚡ What does a street light mainly change electricity into? (a) light (b) heat (c) sound (d) movement
6. 6.Which of these is safe? (a) take cells out after use (b) poke things in a socket (c) touch a fallen wire (d) use mains for a project
7. 7.⚡ What does an electric iron mainly change electricity into? (a) light (b) heat (c) sound (d) movement
8. 8.🔍 Which is the odd one out? (a) an electric kettle (b) a room heater (c) a rice cooker (d) a table fan
9. 9.🔘 A cell, a bulb and switches A and B are joined one after another in a single loop (series). A is ON and B is ON. Does the bulb glow? (a) Yes (b) No
10. 10.🔍 Which is the odd one out? (a) take cells out after use (b) poke things in a socket (c) climb an electric pole (d) touch a fallen wire
11. 11.⚡ What does an electric drill mainly change electricity into? (a) movement (b) light (c) heat (d) sound
12. 12.🔗 Series or parallel circuit: “bulbs share the voltage”? (a) series (b) parallel
13. 13.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they explode (b) they get dimmer (c) they keep glowing (d) they all go out
14. 14.🔍 Which is the odd one out? (a) a ceramic cup (b) a dry cork (c) a graphite rod (d) a paper strip
15. 15.True or false: if a cell is taken out, the circuit is open and no current flows. (a) False (b) True
16. 16.Which of these uses electricity? (a) a generator (b) a solar panel (c) a bicycle dynamo (d) an air conditioner
17. 17.🔘 When a switch is ON, the circuit is … (a) broken (b) open (c) closed (d) cut
18. 18.True or false: “own switch for each bulb” is true of a parallel circuit. (a) True (b) False
19. 19.🔁 Is the circuit closed or open if all wires are joined? (a) closed (b) open
20. 20.🔋 On a cell, does “the flat end” mean the + end or the − end? (a) − (negative) (b) + (positive)
21. 21.Which of these is a conductor? (a) a ceramic cup (b) a plastic ruler (c) a wooden stick (d) a brass key
22. 22.🔦 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
23. 23.⚡ A solar panel changes which kind of energy into electricity? (a) sound energy (b) wind energy (c) light energy (d) chemical energy
24. 24.🔁 Is the circuit closed or open if a wire is cut? (a) closed (b) open
25. 25.True or false: to dry your hands first is not safe. (a) True (b) False
26. 26.🔋 7 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)? =
27. 27.True or false: “used in house wiring” is true of a series circuit. (a) True (b) False
28. 28.True or false: a glass marble is an insulator. (a) True (b) False
29. 29.🔘 Which kind of switch flips up or down? (a) a toggle switch (b) a push button (c) a tilt switch (d) a reed switch
30. 30.True or false: a circle with V inside is the symbol for an LED. (a) True (b) False
31. 31.🔦 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 metal paper clip. Does the bulb glow? (a) Yes (b) No
32. 32.🔋 Does a battery give electricity or use electricity? (a) gives electricity (b) uses electricity
33. 33.💡 Why is house wiring done in parallel? (a) to make bulbs dim (b) to save copper only (c) so all go off together (d) each gets full voltage
34. 34.True or false: “a single current path” is true of a series circuit. (a) False (b) True
35. 35.True or false: to touch a fallen wire is safe. (a) True (b) False
36. 36.🔋 How many volts does one ordinary torch cell give? (a) 1.5 V (b) 0.5 V (c) 230 V (d) 15 V
37. 37.🔋 A 3 V battery and four 1.5 V cells are joined in series, all facing the same way. What is the total voltage (in volts)? =
38. 38.🔋 What is a battery? (a) two or more cells joined (b) a kind of bulb (c) one single wire (d) a switch with a lid
39. 39.True or false: a circle with an X in it is the symbol for a switch. (a) True (b) False
40. 40.🔌 Is aluminium foil a conductor or an insulator? (a) a conductor (b) an insulator

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