Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 453 · 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.⚠️ Which power source should children use for electronics projects? (a) an inverter socket (b) a wall socket (c) a small battery pack (d) a mains extension board
2. 2.🔌 Which part of a screwdriver should an electrician hold? (a) the plastic handle (b) the bare end (c) the metal tip (d) the steel shaft
3. 3.🔗 Series or parallel circuit: “one out, the rest glow”? (a) parallel (b) series
4. 4.True or false: if the loop is complete, the circuit is open and no current flows. (a) True (b) False
5. 5.🔗 Series or parallel circuit: “used in house wiring”? (a) series (b) parallel
6. 6.True or false: many long-short pairs is the symbol for a battery. (a) True (b) False
7. 7.🔍 Which is the odd one out? (a) keep drinks far away (b) stay away from pylons (c) climb an electric pole (d) stop if a part gets hot
8. 8.🔍 Which is the odd one out? (a) a rubber band (b) aluminium foil (c) a plastic ruler (d) a glass marble
9. 9.True or false: a loudspeaker mainly gives out heat. (a) False (b) True
10. 10.🔋 6 identical 1.2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
11. 11.Which drawing is the symbol for a wire? (a) two or more cell symbols (b) a line lifted at a gap (c) a circle with A inside (d) a straight line
12. 12.🔘 What does a switch do in a circuit? (a) makes electricity (b) changes the voltage (c) opens or closes the loop (d) stores current
13. 13.🔘 Two switches are in series. When does the bulb glow? (a) never (b) when both are OFF (c) when both are ON (d) when either is ON
14. 14.🔋 On a cell, does “the longer symbol line” mean the + end or the − end? (a) − (negative) (b) + (positive)
15. 15.Which of these is true of a series circuit? (a) many paths for current (b) a single current path (c) one out, the rest glow (d) own switch for each bulb
16. 16.💡 5 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 5 is taken out of its holder. Does bulb 2 glow? (a) No (b) Yes
17. 17.True or false: a reed switch springs back when let go. (a) True (b) False
18. 18.Which drawing is the symbol for a battery? (a) one tall, one short bar (b) a circle with a cross (c) triangle, bar and arrows (d) two or more cell symbols
19. 19.True or false: “each gets the full volts” is true of a series circuit. (a) False (b) True
20. 20.✏️ In a circuit diagram, wires are usually drawn as … (a) straight lines (b) dotted circles (c) wavy lines (d) little stars
21. 21.True or false: “used in house wiring” is true of a series circuit. (a) False (b) True
22. 22.True or false: a circle with A inside is the symbol for a resistor. (a) False (b) True
23. 23.Which of these is an insulator? (a) a woollen thread (b) a steel spoon (c) an iron nail (d) a copper wire
24. 24.💡 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
25. 25.🔘 Which kind of switch closes when tipped over? (a) a tilt switch (b) a push button (c) a slide switch (d) a reed switch
26. 26.💡 Why is house wiring done in parallel? (a) to make bulbs dim (b) each gets full voltage (c) to save copper only (d) so all go off together
27. 27.True or false: on a cell, “the shorter symbol line” means the − (negative) end. (a) True (b) False
28. 28.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they keep glowing (b) they get dimmer (c) they explode (d) they all go out
29. 29.✏️ In a circuit diagram, which part is drawn as two equal parallel lines? (a) diode (b) resistor (c) wire (d) capacitor
30. 30.True or false: many long-short pairs is the symbol for a capacitor. (a) False (b) True
31. 31.🔘 A bulb and a cell are joined through 3 switches on 3 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?
32. 32.🔁 Is the circuit closed or open if a wire has come loose? (a) closed (b) open
33. 33.🔋 Cells joined + to − in a row (series) give … (a) a smaller voltage (b) no voltage (c) a bigger voltage (d) the same voltage
34. 34.🔋 Does a generator give electricity or use electricity? (a) gives electricity (b) uses electricity
35. 35.💡 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
36. 36.🔍 Which is the odd one out? (a) a paper strip (b) a copper wire (c) aluminium foil (d) a safety pin
37. 37.⚡ What does a traffic signal mainly change electricity into? (a) heat (b) movement (c) sound (d) light
38. 38.Which of these gives us electricity? (a) a refrigerator (b) a computer (c) a wind turbine (d) an air conditioner
39. 39.💡 3 identical bulbs are joined in parallel across a 3 V battery (ideal wires). How many volts does each bulb get? =
40. 40.Which of these gives us electricity? (a) an air conditioner (b) a mobile phone (c) a computer (d) a battery

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