Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 772 · 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: one tall, one short bar is the symbol for a cell. (a) True (b) False
2. 2.Which of these is safe? (a) fly a kite near wires (b) touch a switch when wet (c) use mains for a project (d) keep drinks far away
3. 3.Which of these means the circuit is open? (a) the switch is ON (b) the loop is complete (c) the bulb is unscrewed (d) all wires are joined
4. 4.Which of these is true of a parallel circuit? (a) a single current path (b) one bulb out, all go out (c) a break stops every bulb (d) used in house wiring
5. 5.Which of these is a conductor? (a) a paper strip (b) a ceramic cup (c) a steel spoon (d) a wooden stick
6. 6.Which of these is a conductor? (a) a plastic ruler (b) a glass marble (c) a steel coin (d) a wooden stick
7. 7.🔋 On a cell, does “the end with a bump” mean the + end or the − end? (a) + (positive) (b) − (negative)
8. 8.True or false: to climb an electric pole is safe. (a) False (b) True
9. 9.True or false: “each gets the full volts” is true of a series circuit. (a) True (b) False
10. 10.⚡ A fan changes electrical energy mainly into which kind of energy? (a) light energy (b) movement energy (c) chemical energy (d) sound energy
11. 11.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a ceramic cup across the gap. Does the bulb glow? (a) No (b) Yes
12. 12.True or false: a copper wire is an insulator. (a) True (b) False
13. 13.🔘 A bulb and a cell are joined through 6 switches on 6 side-by-side paths, one switch on each path (parallel). What is the smallest number of switches that must be ON to light the bulb?
14. 14.Which drawing is the symbol for an LED? (a) a circle with A inside (b) triangle against a bar (c) triangle, bar and arrows (d) a straight line
15. 15.Which of these uses electricity? (a) a power station (b) a water pump (c) a solar panel (d) a generator
16. 16.Which of these is not safe? (a) stop if a part gets hot (b) build with an adult near (c) dry your hands first (d) poke things in a socket
17. 17.True or false: on a cell, “usually the red wire” means the − (negative) end. (a) True (b) False
18. 18.⚠️ Who should be with you when you build a circuit? (a) a stranger online (b) a trusted adult (c) nobody (d) a younger child
19. 19.True or false: on a cell, “the flat end” means the + (positive) end. (a) True (b) False
20. 20.💡 3 identical bulbs are joined in series with a battery and a closed switch on the main wire. Bulb 3 is taken out of its holder. Does bulb 1 glow? (a) No (b) Yes
21. 21.True or false: a metal paper clip is a conductor. (a) False (b) True
22. 22.True or false: “a single current path” is true of a series circuit. (a) False (b) True
23. 23.🔗 Series or parallel circuit: “a break stops every bulb”? (a) series (b) parallel
24. 24.🔋 A 6 V battery and four 1.5 V cells are joined in series, all facing the same way. What is the total voltage (in volts)? =
25. 25.🔁 Is the circuit closed or open if a wire has come loose? (a) open (b) closed
26. 26.💡 A battery lights 2 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
27. 27.True or false: “one bulb out, all go out” is true of a series circuit. (a) False (b) True
28. 28.🔘 Which kind of switch works only while pressed? (a) a push button (b) a reed switch (c) a tilt switch (d) a toggle switch
29. 29.💡 In a series circuit, how many paths does the current have? (a) two (b) one for each bulb (c) none (d) one
30. 30.True or false: a loudspeaker mainly gives out heat. (a) True (b) False
31. 31.🔘 Which kind of switch stays where you flip it? (a) a slide switch (b) a toggle switch (c) a tilt switch (d) a push button
32. 32.✏️ Why do engineers draw circuits with symbols? (a) to make it colourful (b) symbols are heavier (c) to hide the circuit (d) quick and clear for all
33. 33.🔍 Which is the odd one out? (a) a buzzer (b) a tube light (c) a siren (d) a loudspeaker
34. 34.⚡ Which tiny particles drift along a metal wire to carry the current? (a) water drops (b) dust particles (c) photons (d) electrons
35. 35.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put an iron nail across the gap. Does the bulb glow? (a) Yes (b) No
36. 36.⚠️ Is it safe to keep drinks far away? (a) safe (b) not safe
37. 37.🔍 Which is the odd one out? (a) a toaster (b) a tube light (c) a torch (d) a traffic signal
38. 38.True or false: “one out, the rest glow” is true of a series circuit. (a) False (b) True
39. 39.True or false: if all wires are joined, the circuit is open and no current flows. (a) False (b) True
40. 40.True or false: on a cell, “usually the black wire” means the + (positive) end. (a) False (b) True

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