Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 444 · 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.True or false: a circle with a cross is the symbol for a bulb. (a) True (b) False
2. 2.🔘 When a switch is ON, the circuit is … (a) cut (b) open (c) closed (d) broken
3. 3.True or false: a circle with V inside is the symbol for a voltmeter. (a) True (b) False
4. 4.🔋 What is a battery? (a) one single wire (b) two or more cells joined (c) a switch with a lid (d) a kind of bulb
5. 5.True or false: an iron nail is an insulator. (a) False (b) True
6. 6.🔘 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 ON, B is ON and C is OFF. Does the bulb glow? (a) No (b) Yes
7. 7.Which drawing is the symbol for a bulb? (a) triangle, bar and arrows (b) triangle against a bar (c) a circle with an X in it (d) a line lifted at a gap
8. 8.True or false: a rubber eraser is a conductor. (a) True (b) False
9. 9.True or false: to stop if a part gets hot is not safe. (a) False (b) True
10. 10.⚠️ Why must we never touch switches with wet hands? (a) it spoils the paint (b) water makes it cold (c) it is just untidy (d) water carries current
11. 11.⚠️ Is it safe to keep drinks far away? (a) not safe (b) safe
12. 12.⚡ A solar panel changes which kind of energy into electricity? (a) sound energy (b) chemical energy (c) light energy (d) wind energy
13. 13.🔌 Is aluminium foil a conductor or an insulator? (a) a conductor (b) an insulator
14. 14.True or false: “own switch for each bulb” is true of a parallel circuit. (a) True (b) False
15. 15.True or false: “one bulb out, all go out” is true of a parallel circuit. (a) True (b) False
16. 16.True or false: a brass key is an insulator. (a) False (b) True
17. 17.🔋 How many volts does one ordinary torch cell give? (a) 15 V (b) 1.5 V (c) 0.5 V (d) 230 V
18. 18.Which of these is safe? (a) poke things in a socket (b) use small battery cells (c) throw cells in a fire (d) touch a fallen wire
19. 19.💡 A battery lights 2 identical bulbs joined in parallel. One more identical bulb is added in parallel. How do the bulbs glow now? (a) brighter (b) the same (c) dimmer
20. 20.True or false: to touch a fallen wire is not safe. (a) True (b) False
21. 21.🔋 On a cell, does “the flat end” mean the + end or the − end? (a) + (positive) (b) − (negative)
22. 22.True or false: a circle with an X in it is the symbol for an ammeter. (a) True (b) False
23. 23.True or false: a doorbell mainly gives out light. (a) True (b) False
24. 24.💡 Why is house wiring done in parallel? (a) to save copper only (b) so all go off together (c) to make bulbs dim (d) each gets full voltage
25. 25.✏️ Why do engineers draw circuits with symbols? (a) symbols are heavier (b) to make it colourful (c) quick and clear for all (d) to hide the circuit
26. 26.✏️ In a circuit diagram, which part is drawn as a dot where wires meet? (a) capacitor (b) junction (c) switch (d) cell
27. 27.💡 In a series circuit, how many paths does the current have? (a) one (b) two (c) one for each bulb (d) none
28. 28.Which of these means the circuit is closed? (a) a cell is taken out (b) the switch is ON (c) the switch is OFF (d) a wire is cut
29. 29.💡 4 identical bulbs are joined in series with a 12 V battery (ideal wires). How many volts does each bulb get? =
30. 30.True or false: a plain rectangle is the symbol for a resistor. (a) True (b) False
31. 31.🔍 Which is the odd one out? (a) a wooden stick (b) a steel coin (c) a glass marble (d) a plastic ruler
32. 32.True or false: “many paths for current” is true of a series circuit. (a) False (b) True
33. 33.Which of these means the circuit is closed? (a) a wire has come loose (b) the bulb is unscrewed (c) a wire is cut (d) all wires are joined
34. 34.✏️ In a circuit diagram, wires are usually drawn as … (a) dotted circles (b) little stars (c) straight lines (d) wavy lines
35. 35.🔗 Series or parallel circuit: “used in house wiring”? (a) series (b) parallel
36. 36.True or false: to build with an adult near is safe. (a) True (b) False
37. 37.💡 A battery lights 2 identical bulbs joined in series. One more identical bulb is added in series. How do the bulbs glow now? (a) dimmer (b) the same (c) brighter
38. 38.💡 Old festival light strings went fully dark when one bulb failed. How were they joined? (a) not joined (b) in parallel (c) by Wi-Fi (d) in series
39. 39.⚠️ Is it safe to fly kites in open fields? (a) safe (b) not safe
40. 40.🔍 Which is the odd one out? (a) a plastic straw (b) a steel spoon (c) a copper wire (d) a graphite rod

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