Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 109 · 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.🔘 A cell and a bulb are joined to 4 side-by-side paths with one switch on each path — A, B, C and D (parallel). A is ON, B is ON, C is ON and D is ON. Does the bulb glow? (a) Yes (b) No
2. 2.True or false: if the switch is ON, the circuit is open and no current flows. (a) False (b) True
3. 3.True or false: a slide switch slides side to side. (a) False (b) True
4. 4.🔋 How many volts does one ordinary torch cell give? (a) 15 V (b) 0.5 V (c) 1.5 V (d) 230 V
5. 5.🔘 Which kind of switch stays where you flip it? (a) a reed switch (b) a push button (c) a tilt switch (d) a toggle switch
6. 6.True or false: if a wire has come loose, the circuit is closed and current flows. (a) True (b) False
7. 7.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a dry cork across the gap. Does the bulb glow? (a) No (b) Yes
8. 8.True or false: to use mains for a project is not safe. (a) True (b) False
9. 9.🔋 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)? =
10. 10.🔁 Is the circuit closed or open if a wire is cut? (a) closed (b) open
11. 11.True or false: “bulbs share the voltage” is true of a series circuit. (a) False (b) True
12. 12.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a wooden stick across the gap. Does the bulb glow? (a) No (b) Yes
13. 13.Which of these is true of a parallel circuit? (a) a single current path (b) used in house wiring (c) a break stops every bulb (d) one bulb out, all go out
14. 14.🔁 What do we call a circuit with a break in it? (a) a series circuit (b) an open circuit (c) a full circuit (d) a closed circuit
15. 15.Which of these gives us electricity? (a) a water pump (b) an air conditioner (c) a refrigerator (d) a wind turbine
16. 16.True or false: on a cell, “the flat end” means the − (negative) end. (a) True (b) False
17. 17.🔘 Which kind of switch works only while pressed? (a) a push button (b) a slide switch (c) a toggle switch (d) a reed switch
18. 18.True or false: on a cell, “usually the red wire” means the − (negative) end. (a) True (b) False
19. 19.⚡ What do we call a flow of electric charge through a wire? (a) a magnet (b) electric current (c) sound (d) friction
20. 20.True or false: a tube light mainly gives out light. (a) False (b) True
21. 21.Which of these uses electricity? (a) a cell (b) a generator (c) a water pump (d) a power station
22. 22.🔗 Series or parallel circuit: “own switch for each bulb”? (a) series (b) parallel
23. 23.🔌 Which metal is used for most electric wires at home? (a) plastic (b) copper (c) glass (d) rubber
24. 24.True or false: “one bulb out, all go out” is true of a parallel circuit. (a) True (b) False
25. 25.🔋 On a cell, does “the shorter symbol line” mean the + end or the − end? (a) + (positive) (b) − (negative)
26. 26.💡 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
27. 27.🔗 Series or parallel circuit: “a break stops every bulb”? (a) parallel (b) series
28. 28.⚠️ Which power source should children use for electronics projects? (a) a mains extension board (b) a wall socket (c) a small battery pack (d) an inverter socket
29. 29.Which of these is safe? (a) fly a kite near wires (b) dry your hands first (c) touch a fallen wire (d) use a cable with cuts
30. 30.🔍 Which is the odd one out? (a) a doorbell (b) a loudspeaker (c) a school bell (d) an LED lamp
31. 31.💡 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
32. 32.✏️ In a circuit diagram, which part is drawn as a circle with M inside? (a) resistor (b) voltmeter (c) battery (d) motor
33. 33.🔘 A cell, a bulb and switches A and B are joined one after another in a single loop (series). A is ON and B is ON. Does the bulb glow? (a) No (b) Yes
34. 34.True or false: to use small battery cells is safe. (a) True (b) False
35. 35.What does a push button do? (a) closes near a magnet (b) closes when tipped over (c) works only while pressed (d) flips up or down
36. 36.🔦 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) No (b) Yes
37. 37.🔋 Does a television give electricity or use electricity? (a) gives electricity (b) uses electricity
38. 38.✏️ In a circuit diagram, which part is drawn as a plain rectangle? (a) wire (b) switch (c) diode (d) resistor
39. 39.🔌 Is a plastic straw a conductor or an insulator? (a) an insulator (b) a conductor
40. 40.True or false: a push button springs back when let go. (a) True (b) False

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