Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 722 · 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 is the odd one out? (a) use small battery cells (b) dry your hands first (c) open a phone charger (d) build with an adult near
2. 2.Which of these is true of a parallel circuit? (a) many paths for current (b) a single current path (c) a break stops every bulb (d) bulbs share the voltage
3. 3.Which of these mainly gives out light? (a) an LED lamp (b) an electric drill (c) an electric toy car (d) a water heater
4. 4.💡 In a series circuit, how many paths does the current have? (a) two (b) one (c) none (d) one for each bulb
5. 5.🔍 Which is the odd one out? (a) a night lamp (b) a loudspeaker (c) an LED lamp (d) a tube light
6. 6.🔋 What should you do with used-up cells? (a) throw them in a fire (b) give them for recycling (c) cut them open (d) bury them in soil
7. 7.True or false: to touch a switch when wet is not safe. (a) False (b) True
8. 8.🔗 Series or parallel circuit: “used in house wiring”? (a) parallel (b) series
9. 9.🔗 Series or parallel circuit: “one bulb out, all go out”? (a) parallel (b) series
10. 10.Which of these is a conductor? (a) a wooden stick (b) a dry cork (c) a cotton thread (d) a steel spoon
11. 11.✏️ In a cell symbol, which line is the + terminal? (a) the longer line (b) the shorter line (c) both lines (d) neither line
12. 12.⚠️ Who should be with you when you build a circuit? (a) a younger child (b) a stranger online (c) nobody (d) a trusted adult
13. 13.🔗 Series or parallel circuit: “one out, the rest glow”? (a) parallel (b) series
14. 14.Which of these is true of a parallel circuit? (a) own switch for each bulb (b) bulbs share the voltage (c) a single current path (d) one bulb out, all go out
15. 15.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a metal paper clip across the gap. Does the bulb glow? (a) No (b) Yes
16. 16.✏️ In a circuit diagram, which part is drawn as a circle with an X in it? (a) battery (b) voltmeter (c) switch (d) bulb
17. 17.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they get dimmer (b) they explode (c) they keep glowing (d) they all go out
18. 18.🔘 Switch A is on the main wire next to the cell and the bulb; then the wire splits into two side-by-side paths, one with switch B and one with switch C. A is OFF, B is ON and C is OFF. Does the bulb glow? (a) No (b) Yes
19. 19.💡 Why is house wiring done in parallel? (a) so all go off together (b) each gets full voltage (c) to save copper only (d) to make bulbs dim
20. 20.🔘 A cell, a bulb and switches A, B, C and D are joined one after another in a single loop (series). A is ON, B is ON, C is ON and D is OFF. Does the bulb glow? (a) Yes (b) No
21. 21.🔍 Which is the odd one out? (a) a rubber eraser (b) a wooden stick (c) aluminium foil (d) a plastic ruler
22. 22.🔌 Is a ceramic cup a conductor or an insulator? (a) a conductor (b) an insulator
23. 23.True or false: on a cell, “the shorter symbol line” means the + (positive) end. (a) True (b) False
24. 24.💡 A battery lights 4 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
25. 25.🔋 6 identical 3 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
26. 26.Which of these is not safe? (a) keep drinks far away (b) build with an adult near (c) fly kites in open fields (d) throw cells in a fire
27. 27.⚠️ Is it safe to use small battery cells? (a) safe (b) not safe
28. 28.True or false: a plain rectangle is the symbol for a resistor. (a) True (b) False
29. 29.🔋 Cells joined + to − in a row (series) give … (a) a smaller voltage (b) a bigger voltage (c) the same voltage (d) no voltage
30. 30.True or false: to dry your hands first is safe. (a) False (b) True
31. 31.True or false: a plastic ruler is a conductor. (a) True (b) False
32. 32.Which of these is not safe? (a) keep drinks far away (b) fly kites in open fields (c) stay away from pylons (d) fly a kite near wires
33. 33.True or false: to throw cells in a fire is not safe. (a) True (b) False
34. 34.🔋 How many 2 V cells must be joined in series to give 10 V?
35. 35.Which drawing is the symbol for a capacitor? (a) a circle with M inside (b) a straight line (c) two equal parallel lines (d) triangle, bar and arrows
36. 36.🔍 Which is the odd one out? (a) a dry cork (b) a steel spoon (c) a ceramic cup (d) a rubber band
37. 37.💡 4 identical bulbs are in parallel and each one takes 0.25 A. What total current (in amperes) comes from the battery? =
38. 38.🔍 Which is the odd one out? (a) stay away from pylons (b) use mains for a project (c) touch a switch when wet (d) use a cable with cuts
39. 39.🔌 Most metals are good … (a) magnets only (b) conductors (c) batteries (d) insulators
40. 40.💡 A battery lights 2 identical bulbs joined in series. One more identical bulb is added in series. How do the bulbs glow now? (a) dimmer (b) the same (c) brighter

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