Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 902 · 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) changes the voltage (b) stores current (c) opens or closes the loop (d) makes electricity
2. 2.True or false: “each gets the full volts” is true of a series circuit. (a) True (b) False
3. 3.🔋 Does a washing machine give electricity or use electricity? (a) gives electricity (b) uses electricity
4. 4.True or false: a circle with V inside is the symbol for a voltmeter. (a) False (b) True
5. 5.🔦 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 an iron nail. Does the bulb glow? (a) No (b) Yes
6. 6.Which of these is not safe? (a) keep drinks far away (b) fly kites in open fields (c) stay away from pylons (d) use mains for a project
7. 7.💡 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
8. 8.🔦 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) Yes (b) No
9. 9.True or false: on a cell, “the flat end” means the + (positive) end. (a) False (b) True
10. 10.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a plastic straw across the gap. Does the bulb glow? (a) Yes (b) No
11. 11.⚠️ Who should be with you when you build a circuit? (a) a younger child (b) a stranger online (c) a trusted adult (d) nobody
12. 12.Which drawing is the symbol for a cell? (a) two or more cell symbols (b) one tall, one short bar (c) a circle with M inside (d) a circle with an X in it
13. 13.True or false: a slide switch slides side to side. (a) False (b) True
14. 14.🔗 Series or parallel circuit: “a break stops every bulb”? (a) parallel (b) series
15. 15.🔍 Which is the odd one out? (a) a plastic straw (b) a ceramic cup (c) aluminium foil (d) a rubber eraser
16. 16.Which of these gives us electricity? (a) a washing machine (b) an air conditioner (c) a wind turbine (d) a television
17. 17.🔋 Does a computer give electricity or use electricity? (a) uses electricity (b) gives electricity
18. 18.🔌 Is a paper strip a conductor or an insulator? (a) a conductor (b) an insulator
19. 19.🔋 How many volts does one ordinary torch cell give? (a) 15 V (b) 230 V (c) 1.5 V (d) 0.5 V
20. 20.True or false: “a break stops every bulb” is true of a parallel circuit. (a) True (b) False
21. 21.🔋 Does a generator give electricity or use electricity? (a) gives electricity (b) uses electricity
22. 22.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a steel spoon across the gap. Does the bulb glow? (a) No (b) Yes
23. 23.Which of these is safe? (a) use small battery cells (b) climb an electric pole (c) touch a switch when wet (d) open a phone charger
24. 24.True or false: a slide switch flips up or down. (a) True (b) False
25. 25.🔍 Which is the odd one out? (a) poke things in a socket (b) use small battery cells (c) use a cable with cuts (d) touch a switch when wet
26. 26.Which drawing is the symbol for a wire? (a) a circle with a cross (b) one tall, one short bar (c) a straight line (d) two equal parallel lines
27. 27.💡 4 identical bulbs are joined in series with a battery and a closed switch on the main wire. All the bulbs are in place. How many bulbs glow?
28. 28.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they get dimmer (b) they keep glowing (c) they explode (d) they all go out
29. 29.💡 A battery lights 5 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
30. 30.🔘 When a switch is ON, the circuit is … (a) closed (b) broken (c) cut (d) open
31. 31.🔌 Is a safety pin a conductor or an insulator? (a) a conductor (b) an insulator
32. 32.🔋 What should you do with used-up cells? (a) throw them in a fire (b) cut them open (c) bury them in soil (d) give them for recycling
33. 33.Which of these mainly makes sound? (a) a ceiling fan (b) a traffic signal (c) a buzzer (d) a tube light
34. 34.⚠️ Is it safe to dry your hands first? (a) not safe (b) safe
35. 35.Which of these uses electricity? (a) a solar panel (b) a generator (c) an air conditioner (d) a cell
36. 36.True or false: on a cell, “usually the red wire” means the − (negative) end. (a) True (b) False
37. 37.🔁 Is the circuit closed or open if a wire has come loose? (a) open (b) closed
38. 38.⚠️ Is it safe to touch a switch when wet? (a) not safe (b) safe
39. 39.Which of these gives us electricity? (a) a computer (b) a washing machine (c) a cell (d) a water pump
40. 40.⚠️ Why must we never touch switches with wet hands? (a) it is just untidy (b) water carries current (c) it spoils the paint (d) water makes it cold

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