Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 16 · 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 dot where wires meet is the symbol for a battery. (a) True (b) False
2. 2.🔘 Which kind of switch slides side to side? (a) a toggle switch (b) a push button (c) a slide switch (d) a reed switch
3. 3.🔋 8 identical 1.5 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
4. 4.💡 Why is house wiring done in parallel? (a) so all go off together (b) each gets full voltage (c) to make bulbs dim (d) to save copper only
5. 5.🔗 Series or parallel circuit: “used in house wiring”? (a) series (b) parallel
6. 6.🔘 Which kind of switch springs back when let go? (a) a toggle switch (b) a tilt switch (c) a push button (d) a reed switch
7. 7.🔋 How many 3 V cells must be joined in series to give 6 V?
8. 8.⚠️ Someone is getting a shock and is still touching a wire. What should you do? (a) pull them by the hand (b) pour water on them (c) wait and watch (d) shout for an adult
9. 9.🔋 On a cell, does “the flat end” mean the + end or the − end? (a) − (negative) (b) + (positive)
10. 10.🔌 Is a glass marble a conductor or an insulator? (a) an insulator (b) a conductor
11. 11.🔦 A circuit has a new cell, a good bulb and a switch that is ON. All the wires are firmly joined. Does the bulb glow? (a) No (b) Yes
12. 12.Which of these uses electricity? (a) a television (b) a solar panel (c) a bicycle dynamo (d) a battery
13. 13.✏️ In a circuit diagram, which part is drawn as a long and a short line? (a) resistor (b) cell (c) switch (d) LED
14. 14.🔘 Two switches are in parallel (side by side). When does the bulb glow? (a) never (b) only when both are OFF (c) when either is ON (d) only when both are ON
15. 15.🔍 Which is the odd one out? (a) touch a fallen wire (b) stop if a part gets hot (c) fly a kite near wires (d) open a phone charger
16. 16.Which of these is a conductor? (a) a wooden stick (b) aluminium foil (c) a paper strip (d) a plastic straw
17. 17.💡 In a series circuit, how many paths does the current have? (a) one for each bulb (b) two (c) one (d) none
18. 18.Which of these is true of a series circuit? (a) own switch for each bulb (b) used in house wiring (c) a single current path (d) many paths for current
19. 19.True or false: on a cell, “the end with a bump” means the + (positive) end. (a) False (b) True
20. 20.Which drawing is the symbol for a battery? (a) a circle with an X in it (b) many long-short pairs (c) triangle against a bar (d) one tall, one short bar
21. 21.🔋 3 identical 3 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
22. 22.🔘 A cell, a bulb and switches A, B and C are joined one after another in a single loop (series). A is OFF, B is ON and C is OFF. Does the bulb glow? (a) No (b) Yes
23. 23.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they all go out (b) they explode (c) they keep glowing (d) they get dimmer
24. 24.💡 Old festival light strings went fully dark when one bulb failed. How were they joined? (a) in series (b) by Wi-Fi (c) in parallel (d) not joined
25. 25.🔁 Is the circuit closed or open if the loop is complete? (a) open (b) closed
26. 26.Which of these means the circuit is closed? (a) the switch is ON (b) the bulb is unscrewed (c) a wire has come loose (d) a cell is taken out
27. 27.Which drawing is the symbol for an ammeter? (a) a circle with A inside (b) a dot where wires meet (c) a circle with a cross (d) a circle with M inside
28. 28.✏️ In a circuit diagram, which part is drawn as a dot where wires meet? (a) junction (b) voltmeter (c) ammeter (d) battery
29. 29.✏️ In a circuit diagram, wires are usually drawn as … (a) straight lines (b) dotted circles (c) wavy lines (d) little stars
30. 30.💡 3 identical bulbs are joined in parallel across a 4.5 V battery (ideal wires). How many volts does each bulb get? =
31. 31.True or false: “a single current path” is true of a parallel circuit. (a) True (b) False
32. 32.🔋 6 identical 1.5 V cells are joined in series, but one of them is put in the wrong way round. What is the total voltage now (in volts)? =
33. 33.🔘 What does a switch do in a circuit? (a) makes electricity (b) changes the voltage (c) opens or closes the loop (d) stores current
34. 34.True or false: a small empty box is the symbol for a resistor. (a) False (b) True
35. 35.True or false: a line lifted at a gap is the symbol for a switch. (a) True (b) False
36. 36.True or false: a table fan mainly gives out light. (a) False (b) True
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 dry cork. Does the bulb glow? (a) No (b) Yes
38. 38.🔋 Identical cells side by side (in parallel) give … (a) the same voltage (b) half the voltage (c) no voltage (d) double the voltage
39. 39.True or false: a safety pin is a conductor. (a) True (b) False
40. 40.✏️ Why do engineers draw circuits with symbols? (a) to hide the circuit (b) to make it colourful (c) quick and clear for all (d) symbols are heavier

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