Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 332 · 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.💡 3 identical bulbs are joined in series with a battery and a closed switch on the main wire. Bulb 3 is taken out of its holder. Does bulb 1 glow? (a) Yes (b) No
2. 2.💡 Old festival light strings went fully dark when one bulb failed. How were they joined? (a) not joined (b) in parallel (c) by Wi-Fi (d) in series
3. 3.🔋 On a cell, does “the end with a bump” mean the + end or the − end? (a) − (negative) (b) + (positive)
4. 4.⚡ A solar panel changes which kind of energy into electricity? (a) light energy (b) chemical energy (c) wind energy (d) sound energy
5. 5.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they keep glowing (b) they all go out (c) they get dimmer (d) they explode
6. 6.Which drawing is the symbol for a switch? (a) a circle with V inside (b) triangle, bar and arrows (c) a small empty box (d) a line lifted at a gap
7. 7.🔁 What do we call a circuit with a break in it? (a) a closed circuit (b) a full circuit (c) an open circuit (d) a series circuit
8. 8.🔋 How many volts does one ordinary torch cell give? (a) 15 V (b) 1.5 V (c) 0.5 V (d) 230 V
9. 9.True or false: if the bulb is unscrewed, the circuit is open and no current flows. (a) True (b) False
10. 10.Which of these means the circuit is closed? (a) a cell is taken out (b) a wire has come loose (c) all wires are joined (d) a wire is cut
11. 11.True or false: a traffic signal mainly gives out light. (a) False (b) True
12. 12.True or false: a wooden stick is a conductor. (a) True (b) False
13. 13.🔍 Which is the odd one out? (a) a siren (b) a buzzer (c) an exhaust fan (d) a doorbell
14. 14.True or false: on a cell, “usually the red wire” means the − (negative) end. (a) False (b) True
15. 15.✏️ In a circuit diagram, which part is drawn as a circle with an X in it? (a) voltmeter (b) bulb (c) ammeter (d) junction
16. 16.💡 Why is house wiring done in parallel? (a) to save copper only (b) so all go off together (c) each gets full voltage (d) to make bulbs dim
17. 17.🔌 Which part of a screwdriver should an electrician hold? (a) the plastic handle (b) the metal tip (c) the steel shaft (d) the bare end
18. 18.💡 6 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) Yes (b) No
19. 19.Which of these means the circuit is closed? (a) the switch is ON (b) a wire has come loose (c) a wire is cut (d) the switch is OFF
20. 20.True or false: a small empty box is the symbol for a resistor. (a) False (b) True
21. 21.True or false: “one out, the rest glow” is true of a series circuit. (a) True (b) False
22. 22.🔌 Is a plastic straw a conductor or an insulator? (a) a conductor (b) an insulator
23. 23.🔍 Which is the odd one out? (a) a steel coin (b) a metal paper clip (c) a wooden stick (d) a steel spoon
24. 24.⚠️ Is it safe to use small battery cells? (a) not safe (b) safe
25. 25.Which drawing is the symbol for a resistor? (a) a small empty box (b) two or more cell symbols (c) one tall, one short bar (d) a circle with an X in it
26. 26.True or false: an LED lamp mainly makes sound. (a) True (b) False
27. 27.🔍 Which is the odd one out? (a) stay away from pylons (b) touch a switch when wet (c) keep drinks far away (d) build with an adult near
28. 28.✏️ In a circuit diagram, which part is drawn as a small empty box? (a) voltmeter (b) cell (c) wire (d) resistor
29. 29.Which of these gives us electricity? (a) a solar panel (b) a refrigerator (c) an air conditioner (d) a mobile phone
30. 30.True or false: “own switch for each bulb” is true of a series circuit. (a) False (b) True
31. 31.True or false: to climb an electric pole is not safe. (a) False (b) True
32. 32.True or false: an electric toy car mainly makes sound. (a) False (b) True
33. 33.✏️ In a circuit diagram, which part is drawn as a circle with M inside? (a) resistor (b) capacitor (c) motor (d) bulb
34. 34.🔌 Which metal is used for most electric wires at home? (a) copper (b) rubber (c) glass (d) plastic
35. 35.True or false: “one bulb out, all go out” is true of a parallel circuit. (a) True (b) False
36. 36.True or false: a dot where wires meet is the symbol for a junction. (a) True (b) False
37. 37.🔘 Which kind of switch springs back when let go? (a) a toggle switch (b) a reed switch (c) a push button (d) a slide switch
38. 38.Which drawing is the symbol for a wire? (a) a long and a short line (b) a plain rectangle (c) a straight line (d) one tall, one short bar
39. 39.Which of these means the circuit is closed? (a) a wire has come loose (b) the switch is OFF (c) a wire is cut (d) the loop is complete
40. 40.🔗 Series or parallel circuit: “used in house wiring”? (a) series (b) parallel

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