Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 534 · 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: to throw cells in a fire is safe. (a) True (b) False
2. 2.True or false: a plastic straw is a conductor. (a) True (b) False
3. 3.True or false: “a single current path” is true of a series circuit. (a) True (b) False
4. 4.What does a reed switch do? (a) stays where you flip it (b) closes when tipped over (c) works only while pressed (d) closes near a magnet
5. 5.True or false: a copper wire is an insulator. (a) True (b) False
6. 6.🔋 Does a washing machine give electricity or use electricity? (a) gives electricity (b) uses electricity
7. 7.True or false: on a cell, “the end with a bump” means the − (negative) end. (a) True (b) False
8. 8.Which of these uses electricity? (a) a cell (b) a refrigerator (c) a wind turbine (d) a bicycle dynamo
9. 9.True or false: a circle with a cross is the symbol for a wire. (a) True (b) False
10. 10.🔍 Which is the odd one out? (a) aluminium foil (b) a copper wire (c) a ceramic cup (d) an iron nail
11. 11.🔋 2 identical 1.2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
12. 12.✏️ In a circuit diagram, wires are usually drawn as … (a) wavy lines (b) little stars (c) dotted circles (d) straight lines
13. 13.💡 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
14. 14.Which drawing is the symbol for a switch? (a) triangle against a bar (b) a small empty box (c) a line lifted at a gap (d) many long-short pairs
15. 15.What does a tilt switch do? (a) works only while pressed (b) closes near a magnet (c) springs back when let go (d) closes when tipped over
16. 16.🔋 7 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)? =
17. 17.🔌 Which metal is used for most electric wires at home? (a) rubber (b) plastic (c) copper (d) glass
18. 18.🔍 Which is the odd one out? (a) a steel spoon (b) a graphite rod (c) a safety pin (d) a rubber band
19. 19.🔁 Is the circuit closed or open if a wire has come loose? (a) closed (b) open
20. 20.🔘 A cell, a bulb and switches A, B, C and D are joined one after another in a single loop (series). A is ON, B is ON, C is OFF and D is OFF. Does the bulb glow? (a) Yes (b) No
21. 21.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a paper strip across the gap. Does the bulb glow? (a) Yes (b) No
22. 22.True or false: on a cell, “the flat end” means the + (positive) end. (a) True (b) False
23. 23.🔘 Which kind of switch slides side to side? (a) a push button (b) a toggle switch (c) a tilt switch (d) a slide switch
24. 24.⚡ What does a night lamp mainly change electricity into? (a) sound (b) heat (c) movement (d) light
25. 25.💡 4 identical bulbs are joined in parallel across a 3 V battery (ideal wires). How many volts does each bulb get? =
26. 26.⚠️ Why must we never touch switches with wet hands? (a) water carries current (b) it spoils the paint (c) water makes it cold (d) it is just untidy
27. 27.🔋 Cells joined + to − in a row (series) give … (a) the same voltage (b) no voltage (c) a bigger voltage (d) a smaller voltage
28. 28.🔌 A gap of dry air between two wires acts as … (a) an insulator (b) a cell (c) a conductor (d) a switch that is ON
29. 29.✏️ In a circuit diagram, which part is drawn as a dot where wires meet? (a) bulb (b) battery (c) motor (d) junction
30. 30.🔗 Series or parallel circuit: “own switch for each bulb”? (a) parallel (b) series
31. 31.💡 2 identical bulbs are joined in series with a battery and a closed switch on the main wire. All the bulbs are in place. How many bulbs glow?
32. 32.🔍 Which is the odd one out? (a) throw cells in a fire (b) poke things in a socket (c) stop if a part gets hot (d) use mains for a project
33. 33.🔋 Does a power station give electricity or use electricity? (a) uses electricity (b) gives electricity
34. 34.🔘 Which kind of switch closes near a magnet? (a) a push button (b) a reed switch (c) a slide switch (d) a tilt switch
35. 35.🔘 Two switches are in parallel (side by side). When does the bulb glow? (a) only when both are ON (b) when either is ON (c) only when both are OFF (d) never
36. 36.True or false: “many paths for current” is true of a series circuit. (a) True (b) False
37. 37.Which of these uses electricity? (a) a washing machine (b) a generator (c) a power station (d) a solar panel
38. 38.⚡ What does a water heater mainly change electricity into? (a) sound (b) movement (c) heat (d) light
39. 39.🔘 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 OFF. Does the bulb glow? (a) No (b) Yes
40. 40.⚡ A fan changes electrical energy mainly into which kind of energy? (a) light energy (b) movement energy (c) chemical energy (d) sound energy

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