Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 816 · 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 is the odd one out? (a) a glass marble (b) a steel spoon (c) a cotton thread (d) a rubber band
2. 2.💡 A battery lights 4 identical bulbs joined in parallel. One more identical bulb is added in parallel. How do the bulbs glow now? (a) the same (b) dimmer (c) brighter
3. 3.🔋 On a cell, does “the shorter symbol line” mean the + end or the − end? (a) − (negative) (b) + (positive)
4. 4.💡 A battery lights 3 identical bulbs joined in parallel. One more identical bulb is added in parallel. How do the bulbs glow now? (a) brighter (b) the same (c) dimmer
5. 5.True or false: many long-short pairs is the symbol for an ammeter. (a) True (b) False
6. 6.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a brass key across the gap. Does the bulb glow? (a) Yes (b) No
7. 7.🔗 Series or parallel circuit: “one out, the rest glow”? (a) series (b) parallel
8. 8.🔘 When a switch is ON, the circuit is … (a) broken (b) closed (c) cut (d) open
9. 9.🔦 A circuit has a new cell, a good bulb and a switch that is OFF. All the wires are firmly joined. A gap in one wire is bridged by a steel spoon. Does the bulb glow? (a) No (b) Yes
10. 10.💡 3 identical bulbs are joined in series with a 12 V battery (ideal wires). How many volts does each bulb get? =
11. 11.True or false: “one bulb out, all go out” is true of a series circuit. (a) True (b) False
12. 12.🔗 Series or parallel circuit: “each gets the full volts”? (a) series (b) parallel
13. 13.Which of these mainly gives out heat? (a) an electric drill (b) a table fan (c) an electric kettle (d) a loudspeaker
14. 14.Which of these is an insulator? (a) a plastic straw (b) a metal paper clip (c) a copper wire (d) a steel spoon
15. 15.🔌 A gap of dry air between two wires acts as … (a) a conductor (b) a switch that is ON (c) a cell (d) an insulator
16. 16.🔦 A circuit has a new cell, a good bulb and a switch that is ON. One wire has come loose from the cell. Does the bulb glow? (a) No (b) Yes
17. 17.🔍 Which is the odd one out? (a) a street light (b) an exhaust fan (c) an LED lamp (d) a torch
18. 18.Which drawing is the symbol for a cell? (a) a straight line (b) triangle against a bar (c) one tall, one short bar (d) a circle with A inside
19. 19.🔁 What must there be for a current to flow? (a) a plastic gap (b) one loose end (c) a complete loop (d) a broken path
20. 20.Which of these gives us electricity? (a) a washing machine (b) a mobile phone (c) a television (d) a cell
21. 21.Which of these is not safe? (a) build with an adult near (b) poke things in a socket (c) dry your hands first (d) use small battery cells
22. 22.Which of these is true of a parallel circuit? (a) one bulb out, all go out (b) bulbs share the voltage (c) own switch for each bulb (d) a break stops every bulb
23. 23.🔦 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 plastic straw. Does the bulb glow? (a) Yes (b) No
24. 24.What does a tilt switch do? (a) springs back when let go (b) works only while pressed (c) closes when tipped over (d) stays where you flip it
25. 25.🔌 Most metals are good … (a) batteries (b) magnets only (c) insulators (d) conductors
26. 26.True or false: a push button springs back when let go. (a) True (b) False
27. 27.🔦 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 steel coin. Does the bulb glow? (a) No (b) Yes
28. 28.🔁 Is the circuit closed or open if the loop is complete? (a) open (b) closed
29. 29.Which of these means the circuit is open? (a) the switch is ON (b) the bulb is unscrewed (c) the loop is complete (d) all wires are joined
30. 30.Which of these uses electricity? (a) a computer (b) a power station (c) a generator (d) a wind turbine
31. 31.True or false: a line lifted at a gap is the symbol for a cell. (a) False (b) True
32. 32.⚠️ Is it safe to use small battery cells? (a) not safe (b) safe
33. 33.🔘 Which kind of switch slides side to side? (a) a tilt switch (b) a push button (c) a slide switch (d) a toggle switch
34. 34.💡 A battery lights 4 identical bulbs joined in series. One more identical bulb is added in series. How do the bulbs glow now? (a) brighter (b) the same (c) dimmer
35. 35.💡 In a series circuit, how many paths does the current have? (a) one for each bulb (b) none (c) two (d) one
36. 36.Which of these mainly gives out light? (a) a toaster (b) a night lamp (c) an electric iron (d) an electric kettle
37. 37.🔌 Is a paper strip a conductor or an insulator? (a) a conductor (b) an insulator
38. 38.🔦 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) Yes (b) No
39. 39.🔋 What is a battery? (a) two or more cells joined (b) a kind of bulb (c) a switch with a lid (d) one single wire
40. 40.🔁 A bulb has two contacts. How many must be joined into the loop for it to glow? (a) none (b) both of them (c) only one (d) it does not matter

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