Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 64 · 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 flat end” mean the + end or the − end? (a) − (negative) (b) + (positive)
2. 2.True or false: a toggle switch stays where you flip it. (a) False (b) True
3. 3.🔘 A cell and a bulb are joined to 2 side-by-side paths with one switch on each path — A and B (parallel). A is OFF and B is ON. Does the bulb glow? (a) No (b) Yes
4. 4.🔦 A circuit has a new cell, a bulb with a broken filament and a switch that is ON. All the wires are firmly joined. A gap in one wire is bridged by a rubber band. Does the bulb glow? (a) Yes (b) No
5. 5.🔋 On a cell, does “the longer symbol line” mean the + end or the − end? (a) − (negative) (b) + (positive)
6. 6.True or false: on a cell, “usually the black wire” means the + (positive) end. (a) True (b) False
7. 7.Which of these is a conductor? (a) a rubber eraser (b) a steel coin (c) a paper strip (d) a glass marble
8. 8.✏️ In a cell symbol, which line is the + terminal? (a) neither line (b) the shorter line (c) both lines (d) the longer line
9. 9.💡 A battery lights 5 identical bulbs joined in series. One more identical bulb is added in series. How do the bulbs glow now? (a) the same (b) brighter (c) dimmer
10. 10.Which drawing is the symbol for a resistor? (a) a line lifted at a gap (b) two equal parallel lines (c) a circle with V inside (d) a small empty box
11. 11.True or false: a dry cork is a conductor. (a) False (b) True
12. 12.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a rubber eraser across the gap. Does the bulb glow? (a) No (b) Yes
13. 13.🔋 Cells joined + to − in a row (series) give … (a) no voltage (b) the same voltage (c) a smaller voltage (d) a bigger voltage
14. 14.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they keep glowing (b) they explode (c) they get dimmer (d) they all go out
15. 15.⚡ What does an LED lamp mainly change electricity into? (a) heat (b) sound (c) light (d) movement
16. 16.What does a push button do? (a) stays where you flip it (b) closes near a magnet (c) flips up or down (d) springs back when let go
17. 17.True or false: a tube light mainly gives out heat. (a) True (b) False
18. 18.🔗 Series or parallel circuit: “a break stops every bulb”? (a) series (b) parallel
19. 19.🔁 Is the circuit closed or open if the switch is OFF? (a) open (b) closed
20. 20.True or false: if the switch is OFF, the circuit is closed and current flows. (a) False (b) True
21. 21.💡 In a series circuit, how many paths does the current have? (a) one (b) none (c) one for each bulb (d) two
22. 22.💡 2 identical bulbs are joined in series with a 3 V battery (ideal wires). How many volts does each bulb get? =
23. 23.True or false: on a cell, “the longer symbol line” means the + (positive) end. (a) True (b) False
24. 24.🔌 Is an iron nail a conductor or an insulator? (a) a conductor (b) an insulator
25. 25.🔁 Is the circuit closed or open if the bulb is unscrewed? (a) closed (b) open
26. 26.🔍 Which is the odd one out? (a) fly kites in open fields (b) fly a kite near wires (c) stop if a part gets hot (d) keep drinks far away
27. 27.🔋 What should you do with used-up cells? (a) cut them open (b) give them for recycling (c) bury them in soil (d) throw them in a fire
28. 28.🔋 What is a battery? (a) a switch with a lid (b) two or more cells joined (c) a kind of bulb (d) one single wire
29. 29.Which of these is safe? (a) throw cells in a fire (b) touch a switch when wet (c) fly kites in open fields (d) fly a kite near wires
30. 30.🔍 Which is the odd one out? (a) fly kites in open fields (b) dry your hands first (c) stay away from pylons (d) use a cable with cuts
31. 31.⚡ A solar panel changes which kind of energy into electricity? (a) chemical energy (b) wind energy (c) light energy (d) sound energy
32. 32.💡 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. How many bulbs glow?
33. 33.⚠️ Why must we never touch switches with wet hands? (a) water carries current (b) it spoils the paint (c) it is just untidy (d) water makes it cold
34. 34.💡 3 identical bulbs are joined in parallel across a 1.5 V battery (ideal wires). How many volts does each bulb get? =
35. 35.💡 6 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. How many bulbs glow?
36. 36.True or false: on a cell, “usually the red wire” means the + (positive) end. (a) False (b) True
37. 37.True or false: to fly kites in open fields is not safe. (a) True (b) False
38. 38.💡 4 identical bulbs are joined in series with a 12 V battery (ideal wires). How many volts does each bulb get? =
39. 39.True or false: a reed switch slides side to side. (a) False (b) True
40. 40.Which of these gives us electricity? (a) a water pump (b) a mobile phone (c) a washing machine (d) a cell

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