Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 121 · 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.Which of these is a conductor? (a) a graphite rod (b) a plastic ruler (c) a woollen thread (d) a wooden stick
2. 2.What does a toggle switch do? (a) stays where you flip it (b) springs back when let go (c) closes near a magnet (d) works only while pressed
3. 3.🔘 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
4. 4.🔗 Series or parallel circuit: “own switch for each bulb”? (a) series (b) parallel
5. 5.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a rubber band across the gap. Does the bulb glow? (a) No (b) Yes
6. 6.🔍 Which is the odd one out? (a) climb an electric pole (b) dry your hands first (c) use small battery cells (d) stop if a part gets hot
7. 7.💡 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
8. 8.🔌 Which part of a screwdriver should an electrician hold? (a) the bare end (b) the plastic handle (c) the metal tip (d) the steel shaft
9. 9.🔍 Which is the odd one out? (a) an electric kettle (b) a tube light (c) an electric iron (d) a toaster
10. 10.True or false: “many paths for current” is true of a parallel circuit. (a) True (b) False
11. 11.💡 In a series circuit, how many paths does the current have? (a) one (b) none (c) two (d) one for each bulb
12. 12.💡 Old festival light strings went fully dark when one bulb failed. How were they joined? (a) in parallel (b) by Wi-Fi (c) not joined (d) in series
13. 13.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they explode (b) they all go out (c) they keep glowing (d) they get dimmer
14. 14.True or false: a rubber band is a conductor. (a) True (b) False
15. 15.True or false: “one bulb out, all go out” is true of a parallel circuit. (a) True (b) False
16. 16.True or false: a circle with A inside is the symbol for a capacitor. (a) True (b) False
17. 17.Which of these is a conductor? (a) a steel coin (b) a plastic straw (c) a woollen thread (d) a wooden stick
18. 18.True or false: “a break stops every bulb” is true of a series circuit. (a) False (b) True
19. 19.True or false: “a break stops every bulb” is true of a parallel circuit. (a) True (b) False
20. 20.Which of these means the circuit is open? (a) the switch is ON (b) all wires are joined (c) a wire has come loose (d) the loop is complete
21. 21.True or false: a slide switch slides side to side. (a) False (b) True
22. 22.⚠️ Which power source should children use for electronics projects? (a) a mains extension board (b) an inverter socket (c) a wall socket (d) a small battery pack
23. 23.⚠️ Is it safe to climb an electric pole? (a) safe (b) not safe
24. 24.Which of these is safe? (a) touch a fallen wire (b) dry your hands first (c) climb an electric pole (d) throw cells in a fire
25. 25.🔋 What is a battery? (a) two or more cells joined (b) one single wire (c) a switch with a lid (d) a kind of bulb
26. 26.💡 5 identical bulbs are in parallel and each bulb has its own switch on its path. 2 of the switches are OFF and the rest are ON. How many bulbs glow?
27. 27.Which of these is true of a series circuit? (a) many paths for current (b) each gets the full volts (c) one bulb out, all go out (d) own switch for each bulb
28. 28.🔦 A circuit has a new cell, a bulb with a broken filament and a switch that is ON. All the wires are firmly joined. Does the bulb glow? (a) Yes (b) No
29. 29.Which of these mainly makes movement? (a) a room heater (b) a night lamp (c) a doorbell (d) a ceiling fan
30. 30.🔋 How many 1.5 V cells must be joined in series to give 6 V?
31. 31.What does a slide switch do? (a) closes near a magnet (b) works only while pressed (c) stays where you flip it (d) slides side to side
32. 32.True or false: two equal parallel lines is the symbol for a junction. (a) False (b) True
33. 33.⚠️ Is it safe to use small battery cells? (a) safe (b) not safe
34. 34.💡 5 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 5 glow? (a) No (b) Yes
35. 35.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
36. 36.🔦 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
37. 37.Which of these means the circuit is closed? (a) a cell is taken out (b) the switch is OFF (c) a wire has come loose (d) the switch is ON
38. 38.🔍 Which is the odd one out? (a) a wooden stick (b) a graphite rod (c) a safety pin (d) a brass key
39. 39.💡 A battery lights 3 identical bulbs joined in parallel. One more identical bulb is added in parallel. How do the bulbs glow now? (a) dimmer (b) brighter (c) the same
40. 40.⚠️ Is it safe to fly a kite near wires? (a) not safe (b) safe

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