Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 712 · 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.🔋 Does a cell give electricity or use electricity? (a) uses electricity (b) gives electricity
2. 2.True or false: “many paths for current” is true of a series circuit. (a) False (b) True
3. 3.🔘 A cell, a bulb and switches A, B, C and D are joined one after another in a single loop (series). A is OFF, B is OFF, C is OFF and D is ON. Does the bulb glow? (a) No (b) Yes
4. 4.🔦 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 aluminium foil. Does the bulb glow? (a) No (b) Yes
5. 5.🔘 What does a switch do in a circuit? (a) stores current (b) makes electricity (c) opens or closes the loop (d) changes the voltage
6. 6.🔘 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 OFF, B is ON and C is ON. Does the bulb glow? (a) Yes (b) No
7. 7.⚠️ Is it safe to touch a fallen wire? (a) safe (b) not safe
8. 8.True or false: a slide switch slides side to side. (a) True (b) False
9. 9.True or false: a reed switch closes near a magnet. (a) False (b) True
10. 10.⚠️ Is it safe to fly kites in open fields? (a) safe (b) not safe
11. 11.⚡ What does an electric kettle mainly change electricity into? (a) light (b) movement (c) sound (d) heat
12. 12.True or false: to poke things in a socket is safe. (a) False (b) True
13. 13.🔌 Is a safety pin a conductor or an insulator? (a) an insulator (b) a conductor
14. 14.🔘 Which kind of switch stays where you flip it? (a) a reed switch (b) a tilt switch (c) a push button (d) a toggle switch
15. 15.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a woollen thread across the gap. Does the bulb glow? (a) Yes (b) No
16. 16.Which drawing is the symbol for a capacitor? (a) a dot where wires meet (b) a circle with an X in it (c) two equal parallel lines (d) triangle, bar and arrows
17. 17.True or false: an electric iron mainly makes sound. (a) False (b) True
18. 18.Which of these is an insulator? (a) an iron nail (b) a wooden stick (c) aluminium foil (d) a steel spoon
19. 19.🔍 Which is the odd one out? (a) dry your hands first (b) throw cells in a fire (c) use small battery cells (d) stop if a part gets hot
20. 20.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a glass marble across the gap. Does the bulb glow? (a) No (b) Yes
21. 21.💡 Old festival light strings went fully dark when one bulb failed. How were they joined? (a) in parallel (b) not joined (c) by Wi-Fi (d) in series
22. 22.True or false: a traffic signal mainly gives out light. (a) True (b) False
23. 23.💡 2 identical bulbs are joined in series with a 4 V battery (ideal wires). How many volts does each bulb get? =
24. 24.🔌 Why are electric wires covered in plastic? (a) to make them heavy (b) plastic is a conductor (c) plastic makes current (d) plastic is an insulator
25. 25.Which of these uses electricity? (a) a television (b) a power station (c) a cell (d) a battery
26. 26.True or false: if all wires are joined, the circuit is open and no current flows. (a) False (b) True
27. 27.Which of these is true of a series circuit? (a) one out, the rest glow (b) many paths for current (c) own switch for each bulb (d) a single current path
28. 28.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they get dimmer (b) they all go out (c) they explode (d) they keep glowing
29. 29.🔁 Is the circuit closed or open if a wire has come loose? (a) open (b) closed
30. 30.💡 4 identical bulbs are joined in series with a 10 V battery (ideal wires). How many volts does each bulb get? =
31. 31.🔋 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)? =
32. 32.True or false: “a break stops every bulb” is true of a parallel circuit. (a) True (b) False
33. 33.True or false: a circle with a cross is the symbol for a bulb. (a) False (b) True
34. 34.True or false: on a cell, “usually the black wire” means the − (negative) end. (a) True (b) False
35. 35.🔌 Which metal is used for most electric wires at home? (a) plastic (b) glass (c) rubber (d) copper
36. 36.🔍 Which is the odd one out? (a) aluminium foil (b) a rubber eraser (c) a copper wire (d) an iron nail
37. 37.🔋 6 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)? =
38. 38.🔍 Which is the odd one out? (a) an electric iron (b) a loudspeaker (c) a buzzer (d) a school bell
39. 39.🔘 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 OFF, B is ON and C is ON. Does the bulb glow? (a) Yes (b) No
40. 40.True or false: on a cell, “the end with a bump” means the + (positive) end. (a) False (b) True

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