Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 436 · 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.🔋 How many 2 V cells must be joined in series to give 16 V?
2. 2.True or false: “a break stops every bulb” is true of a parallel circuit. (a) True (b) False
3. 3.True or false: a brass key is an insulator. (a) False (b) True
4. 4.Which drawing is the symbol for a resistor? (a) a plain rectangle (b) a circle with a cross (c) triangle, bar and arrows (d) two or more cell symbols
5. 5.True or false: a straight line is the symbol for a resistor. (a) False (b) True
6. 6.Which of these is a conductor? (a) a glass marble (b) a steel spoon (c) a cotton thread (d) a paper strip
7. 7.True or false: “used in house wiring” is true of a parallel circuit. (a) False (b) True
8. 8.True or false: triangle against a bar is the symbol for a diode. (a) True (b) False
9. 9.🔋 Does a mobile phone give electricity or use electricity? (a) uses electricity (b) gives electricity
10. 10.🔍 Which is the odd one out? (a) aluminium foil (b) an iron nail (c) a rubber band (d) a safety pin
11. 11.🔋 How many 2 V cells must be joined in series to give 4 V?
12. 12.💡 Old festival light strings went fully dark when one bulb failed. How were they joined? (a) in parallel (b) in series (c) not joined (d) by Wi-Fi
13. 13.True or false: “one bulb out, all go out” is true of a series circuit. (a) False (b) True
14. 14.🔍 Which is the odd one out? (a) use small battery cells (b) dry your hands first (c) build with an adult near (d) poke things in a socket
15. 15.What does a push button do? (a) slides side to side (b) flips up or down (c) works only while pressed (d) stays where you flip it
16. 16.True or false: “used in house wiring” is true of a series circuit. (a) True (b) False
17. 17.✏️ In a circuit diagram, which part is drawn as one tall, one short bar? (a) switch (b) motor (c) resistor (d) cell
18. 18.🔘 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) No (b) Yes
19. 19.✏️ In a circuit diagram, which part is drawn as triangle, bar and arrows? (a) LED (b) junction (c) battery (d) diode
20. 20.True or false: a school bell mainly gives out light. (a) True (b) False
21. 21.🔍 Which is the odd one out? (a) a ceramic cup (b) a steel spoon (c) aluminium foil (d) an iron nail
22. 22.True or false: on a cell, “the shorter symbol line” means the − (negative) end. (a) True (b) False
23. 23.Which drawing is the symbol for a bulb? (a) a dot where wires meet (b) a circle with an X in it (c) a circle with V inside (d) triangle, bar and arrows
24. 24.💡 In a series circuit, how many paths does the current have? (a) one for each bulb (b) two (c) none (d) one
25. 25.Which of these is not safe? (a) stay away from pylons (b) use small battery cells (c) stop if a part gets hot (d) poke things in a socket
26. 26.⚠️ Is it safe to fly a kite near wires? (a) safe (b) not safe
27. 27.🔌 Which metal is used for most electric wires at home? (a) rubber (b) copper (c) plastic (d) glass
28. 28.True or false: a steel coin is a conductor. (a) False (b) True
29. 29.True or false: a steel spoon is a conductor. (a) True (b) False
30. 30.Which of these mainly makes movement? (a) a room heater (b) a toaster (c) a water heater (d) an electric drill
31. 31.🔋 On a cell, does “the longer symbol line” mean the + end or the − end? (a) + (positive) (b) − (negative)
32. 32.⚡ A bicycle dynamo changes which kind of energy into electricity? (a) light energy (b) chemical energy (c) sound energy (d) movement energy
33. 33.🔋 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)? =
34. 34.Which of these is true of a series circuit? (a) one out, the rest glow (b) many paths for current (c) bulbs share the voltage (d) each gets the full volts
35. 35.🔋 On a cell, does “usually the red wire” mean the + end or the − end? (a) − (negative) (b) + (positive)
36. 36.Which of these is safe? (a) use a cable with cuts (b) open a phone charger (c) touch a switch when wet (d) build with an adult near
37. 37.🔘 Which kind of switch stays where you flip it? (a) a slide switch (b) a push button (c) a reed switch (d) a toggle switch
38. 38.💡 5 identical bulbs are joined in series with a battery and a closed switch on the main wire. All the bulbs are in place. Does bulb 1 glow? (a) No (b) Yes
39. 39.Which of these is true of a series circuit? (a) many paths for current (b) one out, the rest glow (c) used in house wiring (d) a break stops every bulb
40. 40.🔘 Which kind of switch closes when tipped over? (a) a push button (b) a tilt switch (c) a slide switch (d) a toggle switch

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