Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 231 · 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 mobile phone give electricity or use electricity? (a) uses electricity (b) gives electricity
2. 2.🔋 On a cell, does “usually the black wire” mean the + end or the − end? (a) + (positive) (b) − (negative)
3. 3.✏️ In a cell symbol, which line is the + terminal? (a) both lines (b) neither line (c) the shorter line (d) the longer line
4. 4.🔘 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 OFF and C is OFF. Does the bulb glow? (a) Yes (b) No
5. 5.⚡ What does an electric iron mainly change electricity into? (a) sound (b) movement (c) light (d) heat
6. 6.Which of these is safe? (a) poke things in a socket (b) use a cable with cuts (c) use small battery cells (d) open a phone charger
7. 7.True or false: if the switch is ON, the circuit is closed and current flows. (a) False (b) True
8. 8.Which of these is true of a series circuit? (a) one out, the rest glow (b) a single current path (c) used in house wiring (d) many paths for current
9. 9.True or false: “a break stops every bulb” is true of a series circuit. (a) False (b) True
10. 10.True or false: a slide switch slides side to side. (a) True (b) False
11. 11.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they explode (b) they get dimmer (c) they all go out (d) they keep glowing
12. 12.🔁 Is the circuit closed or open if a cell is taken out? (a) closed (b) open
13. 13.Which of these means the circuit is open? (a) all wires are joined (b) the loop is complete (c) a cell is taken out (d) the switch is ON
14. 14.🔋 On a cell, does “the longer symbol line” mean the + end or the − end? (a) − (negative) (b) + (positive)
15. 15.True or false: to stop if a part gets hot is safe. (a) False (b) True
16. 16.True or false: “used in house wiring” is true of a series circuit. (a) True (b) False
17. 17.⚡ A bicycle dynamo changes which kind of energy into electricity? (a) light energy (b) movement energy (c) chemical energy (d) sound energy
18. 18.🔗 Series or parallel circuit: “one out, the rest glow”? (a) parallel (b) series
19. 19.🔌 Which part of a screwdriver should an electrician hold? (a) the plastic handle (b) the bare end (c) the steel shaft (d) the metal tip
20. 20.⚡ A cell changes stored chemical energy into which kind of energy? (a) sound energy (b) wind energy (c) nuclear energy (d) electrical energy
21. 21.🔌 Is a paper strip a conductor or an insulator? (a) a conductor (b) an insulator
22. 22.🔌 Most metals are good … (a) conductors (b) insulators (c) magnets only (d) batteries
23. 23.True or false: “one out, the rest glow” is true of a parallel circuit. (a) True (b) False
24. 24.Which of these mainly gives out light? (a) a street light (b) a rice cooker (c) a siren (d) an electric kettle
25. 25.True or false: a loudspeaker mainly makes movement. (a) False (b) True
26. 26.Which of these mainly makes movement? (a) an LED lamp (b) a water heater (c) a siren (d) a mixer grinder
27. 27.🔋 Does a refrigerator give electricity or use electricity? (a) uses electricity (b) gives electricity
28. 28.✏️ In a circuit diagram, which part is drawn as a circle with M inside? (a) ammeter (b) switch (c) diode (d) motor
29. 29.True or false: “one out, the rest glow” is true of a series circuit. (a) True (b) False
30. 30.⚡ What does an LED lamp mainly change electricity into? (a) heat (b) sound (c) light (d) movement
31. 31.💡 A battery lights 2 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
32. 32.🔘 A cell, a bulb and switches A and B are joined one after another in a single loop (series). A is OFF and B is ON. Does the bulb glow? (a) Yes (b) No
33. 33.Which of these mainly makes sound? (a) a street light (b) an electric kettle (c) a loudspeaker (d) a torch
34. 34.🔦 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 a paper strip. Does the bulb glow? (a) Yes (b) No
35. 35.⚠️ Someone is getting a shock and is still touching a wire. What should you do? (a) shout for an adult (b) pull them by the hand (c) pour water on them (d) wait and watch
36. 36.✏️ In a circuit diagram, which part is drawn as a long and a short line? (a) resistor (b) ammeter (c) switch (d) cell
37. 37.🔦 A circuit has a new cell, a bulb with a broken filament and a switch that is ON. All the wires are firmly joined. A gap in one wire is bridged by a ceramic cup. Does the bulb glow? (a) Yes (b) No
38. 38.🔍 Which is the odd one out? (a) dry your hands first (b) stay away from pylons (c) poke things in a socket (d) use small battery cells
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 ON, B is ON and C is ON. Does the bulb glow? (a) Yes (b) No
40. 40.🔋 How many volts does one ordinary torch cell give? (a) 1.5 V (b) 230 V (c) 0.5 V (d) 15 V

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