Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 858 · 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.✏️ In a circuit diagram, which part is drawn as a circle with M inside? (a) motor (b) diode (c) ammeter (d) wire
2. 2.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a woollen thread across the gap. Does the bulb glow? (a) Yes (b) No
3. 3.True or false: a buzzer mainly makes sound. (a) True (b) False
4. 4.⚠️ Is it safe to use a cable with cuts? (a) not safe (b) safe
5. 5.Which of these is a conductor? (a) a paper strip (b) a woollen thread (c) a plastic ruler (d) a metal paper clip
6. 6.⚠️ Someone is getting a shock and is still touching a wire. What should you do? (a) shout for an adult (b) wait and watch (c) pull them by the hand (d) pour water on them
7. 7.⚠️ Is it safe to poke things in a socket? (a) not safe (b) safe
8. 8.True or false: a dot where wires meet is the symbol for a junction. (a) False (b) True
9. 9.✏️ In a circuit diagram, which part is drawn as triangle, bar and arrows? (a) motor (b) switch (c) LED (d) ammeter
10. 10.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a plastic ruler across the gap. Does the bulb glow? (a) No (b) Yes
11. 11.True or false: a toggle switch slides side to side. (a) True (b) False
12. 12.🔍 Which is the odd one out? (a) an LED lamp (b) a night lamp (c) a tube light (d) a room heater
13. 13.🔍 Which is the odd one out? (a) a cotton thread (b) a wooden stick (c) a rubber band (d) an iron nail
14. 14.🔘 A cell and a bulb are joined to 3 side-by-side paths with one switch on each path — A, B and C (parallel). A is OFF, B is OFF and C is OFF. Does the bulb glow? (a) Yes (b) No
15. 15.🔋 8 identical 1.2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
16. 16.True or false: to poke things in a socket is safe. (a) False (b) True
17. 17.✏️ In a circuit diagram, which part is drawn as a straight line? (a) ammeter (b) battery (c) switch (d) wire
18. 18.True or false: “used in house wiring” is true of a series circuit. (a) True (b) False
19. 19.🔍 Which is the odd one out? (a) take cells out after use (b) build with an adult near (c) climb an electric pole (d) keep drinks far away
20. 20.True or false: a ceiling fan mainly gives out heat. (a) True (b) False
21. 21.💡 4 identical bulbs are joined in parallel (each on its own side-by-side path) with a battery and a closed switch on the main wire. Bulb 2 is taken out of its holder. Does bulb 3 glow? (a) No (b) Yes
22. 22.Which of these is an insulator? (a) a dry cork (b) a brass key (c) a copper wire (d) a steel spoon
23. 23.🔋 On a cell, does “usually the black wire” mean the + end or the − end? (a) − (negative) (b) + (positive)
24. 24.💡 3 identical bulbs are in parallel and each one takes 0.2 A. What total current (in amperes) comes from the battery? =
25. 25.🔘 Which kind of switch slides side to side? (a) a tilt switch (b) a push button (c) a slide switch (d) a toggle switch
26. 26.True or false: a table fan mainly gives out light. (a) False (b) True
27. 27.Which of these is true of a series circuit? (a) one out, the rest glow (b) own switch for each bulb (c) a single current path (d) used in house wiring
28. 28.🔘 Two switches are in parallel (side by side). When does the bulb glow? (a) only when both are OFF (b) never (c) when either is ON (d) only when both are ON
29. 29.💡 2 identical bulbs are joined in series with a battery and a closed switch on the main wire. Bulb 2 is taken out of its holder. Does bulb 1 glow? (a) Yes (b) No
30. 30.True or false: if the loop is complete, the circuit is open and no current flows. (a) False (b) True
31. 31.🔌 Why are electric wires covered in plastic? (a) plastic makes current (b) plastic is a conductor (c) to make them heavy (d) plastic is an insulator
32. 32.True or false: “many paths for current” is true of a parallel circuit. (a) True (b) False
33. 33.Which of these is true of a parallel circuit? (a) bulbs share the voltage (b) one out, the rest glow (c) a single current path (d) a break stops every bulb
34. 34.✏️ In a circuit diagram, which part is drawn as many long-short pairs? (a) bulb (b) diode (c) battery (d) resistor
35. 35.Which of these is not safe? (a) keep drinks far away (b) use small battery cells (c) open a phone charger (d) stay away from pylons
36. 36.💡 4 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?
37. 37.🔦 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) No (b) Yes
38. 38.🔁 Is the circuit closed or open if the bulb is unscrewed? (a) open (b) closed
39. 39.🔋 Does a wind turbine give electricity or use electricity? (a) gives electricity (b) uses electricity
40. 40.💡 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

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