Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 552 · 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 an X in it is the symbol for a bulb. (a) True (b) False
2. 2.⚠️ Who should be with you when you build a circuit? (a) nobody (b) a stranger online (c) a trusted adult (d) a younger child
3. 3.🔍 Which is the odd one out? (a) use a cable with cuts (b) throw cells in a fire (c) climb an electric pole (d) take cells out after use
4. 4.Which of these is true of a series circuit? (a) one out, the rest glow (b) one bulb out, all go out (c) own switch for each bulb (d) many paths for current
5. 5.🔘 Which kind of switch stays where you flip it? (a) a toggle switch (b) a tilt switch (c) a slide switch (d) a push button
6. 6.🔗 Series or parallel circuit: “own switch for each bulb”? (a) series (b) parallel
7. 7.⚡ What does a traffic signal mainly change electricity into? (a) sound (b) heat (c) light (d) movement
8. 8.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they all go out (b) they get dimmer (c) they keep glowing (d) they explode
9. 9.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a rubber band across the gap. Does the bulb glow? (a) Yes (b) No
10. 10.True or false: “own switch for each bulb” is true of a series circuit. (a) True (b) False
11. 11.🔘 When a switch is ON, the circuit is … (a) open (b) broken (c) closed (d) cut
12. 12.Which of these is not safe? (a) stop if a part gets hot (b) use mains for a project (c) keep drinks far away (d) build with an adult near
13. 13.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a metal paper clip across the gap. Does the bulb glow? (a) No (b) Yes
14. 14.🔌 Is a paper strip a conductor or an insulator? (a) a conductor (b) an insulator
15. 15.💡 4 identical bulbs are joined in parallel (each on its own side-by-side path) with a battery and a closed switch on the main wire. Bulb 2 is taken out of its holder. Does bulb 1 glow? (a) Yes (b) No
16. 16.True or false: on a cell, “usually the black wire” means the − (negative) end. (a) False (b) True
17. 17.🔁 What do we call a circuit with a break in it? (a) an open circuit (b) a series circuit (c) a full circuit (d) a closed circuit
18. 18.🔋 On a cell, does “the shorter symbol line” mean the + end or the − end? (a) − (negative) (b) + (positive)
19. 19.True or false: a traffic signal mainly gives out light. (a) True (b) False
20. 20.True or false: if a wire has come loose, the circuit is closed and current flows. (a) True (b) False
21. 21.⚠️ Is it safe to poke things in a socket? (a) not safe (b) safe
22. 22.⚠️ A cell gets hot when its + and − ends are joined by a bare wire. What is this called? (a) a safe circuit (b) an open circuit (c) a short circuit (d) a parallel circuit
23. 23.🔘 Which kind of switch flips up or down? (a) a toggle switch (b) a slide switch (c) a tilt switch (d) a push button
24. 24.⚠️ Is it safe to stop if a part gets hot? (a) not safe (b) safe
25. 25.Which of these means the circuit is closed? (a) the switch is OFF (b) all wires are joined (c) a wire has come loose (d) a cell is taken out
26. 26.⚠️ Is it safe to take cells out after use? (a) not safe (b) safe
27. 27.True or false: a rubber eraser is an insulator. (a) True (b) False
28. 28.🔘 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 ON, B is OFF and C is ON. Does the bulb glow? (a) No (b) Yes
29. 29.🔋 What should you do with used-up cells? (a) bury them in soil (b) cut them open (c) throw them in a fire (d) give them for recycling
30. 30.🔍 Which is the odd one out? (a) a metal paper clip (b) a rubber band (c) a plastic ruler (d) a glass marble
31. 31.🔌 Is a ceramic cup a conductor or an insulator? (a) an insulator (b) a conductor
32. 32.💡 A battery lights 5 identical bulbs joined in series. One more identical bulb is added in series. How do the bulbs glow now? (a) the same (b) dimmer (c) brighter
33. 33.💡 Why is house wiring done in parallel? (a) to save copper only (b) to make bulbs dim (c) each gets full voltage (d) so all go off together
34. 34.Which of these is safe? (a) use mains for a project (b) stop if a part gets hot (c) climb an electric pole (d) touch a switch when wet
35. 35.True or false: a tilt switch closes near a magnet. (a) False (b) True
36. 36.✏️ In a circuit diagram, which part is drawn as triangle against a bar? (a) diode (b) LED (c) junction (d) ammeter
37. 37.⚠️ Is it safe to throw cells in a fire? (a) safe (b) not safe
38. 38.⚡ A solar panel changes which kind of energy into electricity? (a) chemical energy (b) sound energy (c) wind energy (d) light energy
39. 39.✏️ In a circuit diagram, wires are usually drawn as … (a) straight lines (b) dotted circles (c) little stars (d) wavy lines
40. 40.🔘 Which kind of switch closes near a magnet? (a) a toggle switch (b) a push button (c) a reed switch (d) a tilt switch

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