Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 765 · 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 push button closes near a magnet. (a) True (b) False
2. 2.⚠️ Is it safe to stop if a part gets hot? (a) not safe (b) safe
3. 3.🔍 Which is the odd one out? (a) an electric drill (b) a ceiling fan (c) a tube light (d) an exhaust fan
4. 4.🔘 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 ON. Does the bulb glow? (a) No (b) Yes
5. 5.🔋 How many 1.5 V cells must be joined in series to give 10.5 V?
6. 6.🔍 Which is the odd one out? (a) a loudspeaker (b) a torch (c) a tube light (d) a night lamp
7. 7.💡 6 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?
8. 8.True or false: on a cell, “the shorter symbol line” means the + (positive) end. (a) True (b) False
9. 9.🔘 A cell and a bulb are joined to two side-by-side paths: path 1 has switches A and B one after another, path 2 has switch C. A is ON, B is OFF and C is OFF. Does the bulb glow? (a) No (b) Yes
10. 10.🔁 Is the circuit closed or open if the bulb is unscrewed? (a) closed (b) open
11. 11.⚡ What does a night lamp mainly change electricity into? (a) sound (b) heat (c) light (d) movement
12. 12.🔋 On a cell, does “the flat end” mean the + end or the − end? (a) + (positive) (b) − (negative)
13. 13.Which drawing is the symbol for a bulb? (a) a long and a short line (b) two equal parallel lines (c) a circle with an X in it (d) two or more cell symbols
14. 14.🔍 Which is the odd one out? (a) poke things in a socket (b) use mains for a project (c) stop if a part gets hot (d) use a cable with cuts
15. 15.Which of these is true of a parallel circuit? (a) a break stops every bulb (b) one out, the rest glow (c) bulbs share the voltage (d) a single current path
16. 16.🔋 On a cell, does “the end with a bump” mean the + end or the − end? (a) − (negative) (b) + (positive)
17. 17.✏️ In a circuit diagram, which part is drawn as two equal parallel lines? (a) switch (b) capacitor (c) bulb (d) motor
18. 18.Which of these is true of a parallel circuit? (a) many paths for current (b) a break stops every bulb (c) one bulb out, all go out (d) bulbs share the voltage
19. 19.✏️ In a circuit diagram, which part is drawn as a small empty box? (a) battery (b) motor (c) resistor (d) cell
20. 20.🔗 Series or parallel circuit: “a single current path”? (a) parallel (b) series
21. 21.True or false: a torch mainly gives out light. (a) False (b) True
22. 22.🔌 Is aluminium foil a conductor or an insulator? (a) a conductor (b) an insulator
23. 23.Which of these is true of a series circuit? (a) used in house wiring (b) one out, the rest glow (c) one bulb out, all go out (d) own switch for each bulb
24. 24.Which of these uses electricity? (a) a wind turbine (b) a refrigerator (c) a cell (d) a bicycle dynamo
25. 25.True or false: a push button springs back when let go. (a) True (b) False
26. 26.🔘 Which kind of switch closes when tipped over? (a) a slide switch (b) a push button (c) a tilt switch (d) a reed switch
27. 27.Which of these is true of a parallel circuit? (a) bulbs share the voltage (b) a break stops every bulb (c) used in house wiring (d) a single current path
28. 28.Which of these is safe? (a) poke things in a socket (b) touch a switch when wet (c) use mains for a project (d) build with an adult near
29. 29.🔘 Which kind of switch closes near a magnet? (a) a slide switch (b) a push button (c) a reed switch (d) a toggle switch
30. 30.🔍 Which is the odd one out? (a) a ceramic cup (b) a woollen thread (c) a copper wire (d) a plastic straw
31. 31.True or false: a traffic signal mainly makes movement. (a) True (b) False
32. 32.🔋 On a cell, does “the shorter symbol line” mean the + end or the − end? (a) − (negative) (b) + (positive)
33. 33.🔗 Series or parallel circuit: “many paths for current”? (a) series (b) parallel
34. 34.True or false: “used in house wiring” is true of a series circuit. (a) False (b) True
35. 35.Which of these mainly gives out light? (a) an electric kettle (b) a street light (c) a buzzer (d) an electric iron
36. 36.💡 4 identical bulbs are joined in series with a 10 V battery (ideal wires). How many volts does each bulb get? =
37. 37.⚠️ Is it safe to touch a switch when wet? (a) safe (b) not safe
38. 38.⚠️ Is it safe to use mains for a project? (a) safe (b) not safe
39. 39.🔗 Series or parallel circuit: “each gets the full volts”? (a) parallel (b) series
40. 40.🔍 Which is the odd one out? (a) touch a fallen wire (b) keep drinks far away (c) use small battery cells (d) take cells out after use

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