Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 427 · 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.🔋 On a cell, does “the shorter symbol line” mean the + end or the − end? (a) + (positive) (b) − (negative)
2. 2.💡 A battery lights 3 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
3. 3.Which of these is an insulator? (a) a wooden stick (b) an iron nail (c) a graphite rod (d) a metal paper clip
4. 4.🔘 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 ON. Does the bulb glow? (a) Yes (b) No
5. 5.Which of these is true of a parallel circuit? (a) used in house wiring (b) bulbs share the voltage (c) one bulb out, all go out (d) a single current path
6. 6.🔗 Series or parallel circuit: “many paths for current”? (a) parallel (b) series
7. 7.⚡ Which tiny particles drift along a metal wire to carry the current? (a) electrons (b) photons (c) water drops (d) dust particles
8. 8.Which drawing is the symbol for a battery? (a) a dot where wires meet (b) two or more cell symbols (c) triangle, bar and arrows (d) a long and a short line
9. 9.💡 Why is house wiring done in parallel? (a) to make bulbs dim (b) each gets full voltage (c) to save copper only (d) so all go off together
10. 10.🔘 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 OFF. Does the bulb glow? (a) Yes (b) No
11. 11.True or false: on a cell, “the longer symbol line” means the + (positive) end. (a) True (b) False
12. 12.⚠️ About how many volts do home sockets in India supply? (a) 12 V (b) 230 V (c) 9 V (d) 1.5 V
13. 13.🔋 Does a computer give electricity or use electricity? (a) uses electricity (b) gives electricity
14. 14.⚡ What does a doorbell mainly change electricity into? (a) light (b) movement (c) sound (d) heat
15. 15.🔘 Which kind of switch springs back when let go? (a) a toggle switch (b) a slide switch (c) a reed switch (d) a push button
16. 16.🔁 What must there be for a current to flow? (a) a complete loop (b) a broken path (c) one loose end (d) a plastic gap
17. 17.Which drawing is the symbol for a junction? (a) a circle with A inside (b) a dot where wires meet (c) one tall, one short bar (d) a circle with V inside
18. 18.Which of these mainly gives out light? (a) a night lamp (b) an electric drill (c) a room heater (d) a toaster
19. 19.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they keep glowing (b) they all go out (c) they explode (d) they get dimmer
20. 20.⚠️ Is it safe to poke things in a socket? (a) not safe (b) safe
21. 21.Which drawing is the symbol for a cell? (a) a circle with V inside (b) two or more cell symbols (c) a line lifted at a gap (d) a long and a short line
22. 22.True or false: to build with an adult near is not safe. (a) True (b) False
23. 23.🔁 Is the circuit closed or open if the switch is ON? (a) closed (b) open
24. 24.Which of these is a conductor? (a) a plastic ruler (b) a rubber band (c) aluminium foil (d) a wooden stick
25. 25.🔋 On a cell, does “the longer symbol line” mean the + end or the − end? (a) + (positive) (b) − (negative)
26. 26.🔘 Which kind of switch flips up or down? (a) a reed switch (b) a toggle switch (c) a push button (d) a slide switch
27. 27.🔘 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 OFF, C is ON and D is ON. Does the bulb glow? (a) Yes (b) No
28. 28.True or false: to touch a switch when wet is safe. (a) False (b) True
29. 29.True or false: a plain rectangle is the symbol for a cell. (a) True (b) False
30. 30.✏️ In a cell symbol, which line is the + terminal? (a) both lines (b) the shorter line (c) the longer line (d) neither line
31. 31.🔌 Is a paper strip a conductor or an insulator? (a) a conductor (b) an insulator
32. 32.✏️ In a circuit diagram, which part is drawn as a line lifted at a gap? (a) bulb (b) LED (c) wire (d) switch
33. 33.✏️ In a circuit diagram, which part is drawn as a dot where wires meet? (a) bulb (b) capacitor (c) ammeter (d) junction
34. 34.🔁 Is the circuit closed or open if a wire is cut? (a) closed (b) open
35. 35.🔦 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) No (b) Yes
36. 36.🔋 On a cell, does “the end with a bump” mean the + end or the − end? (a) − (negative) (b) + (positive)
37. 37.🔍 Which is the odd one out? (a) a school bell (b) an exhaust fan (c) a mixer grinder (d) an electric toy car
38. 38.🔋 On a cell, does “usually the red wire” mean the + end or the − end? (a) + (positive) (b) − (negative)
39. 39.💡 In a series circuit, how many paths does the current have? (a) one for each bulb (b) two (c) none (d) one
40. 40.True or false: “used in house wiring” is true of a series circuit. (a) False (b) True

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