Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 853 · 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.⚡ A solar panel changes which kind of energy into electricity? (a) light energy (b) chemical energy (c) sound energy (d) wind energy
2. 2.✏️ Why do engineers draw circuits with symbols? (a) quick and clear for all (b) symbols are heavier (c) to hide the circuit (d) to make it colourful
3. 3.🔍 Which is the odd one out? (a) fly kites in open fields (b) stay away from pylons (c) dry your hands first (d) fly a kite near wires
4. 4.🔘 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 ON. Does the bulb glow? (a) No (b) Yes
5. 5.🔗 Series or parallel circuit: “used in house wiring”? (a) parallel (b) series
6. 6.⚠️ Is it safe to fly kites in open fields? (a) not safe (b) safe
7. 7.🔋 A 3 V battery and four 1.5 V cells are joined in series, all facing the same way. What is the total voltage (in volts)? =
8. 8.What does a push button do? (a) flips up or down (b) stays where you flip it (c) closes near a magnet (d) springs back when let go
9. 9.🔦 A circuit has a new cell, a good bulb and a switch that is ON. All the wires are firmly joined. A gap in one wire is bridged by a dry cork. Does the bulb glow? (a) No (b) Yes
10. 10.🔍 Which is the odd one out? (a) build with an adult near (b) use small battery cells (c) fly kites in open fields (d) touch a switch when wet
11. 11.True or false: to poke things in a socket is not safe. (a) False (b) True
12. 12.🔌 A gap of dry air between two wires acts as … (a) a conductor (b) a switch that is ON (c) a cell (d) an insulator
13. 13.🔌 Is a wooden stick a conductor or an insulator? (a) a conductor (b) an insulator
14. 14.💡 A battery lights 5 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
15. 15.Which of these mainly gives out heat? (a) a torch (b) a night lamp (c) a school bell (d) an electric iron
16. 16.Which of these is a conductor? (a) a woollen thread (b) a plastic ruler (c) a plastic straw (d) aluminium foil
17. 17.🔘 Which kind of switch closes when tipped over? (a) a reed switch (b) a slide switch (c) a toggle switch (d) a tilt switch
18. 18.💡 3 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?
19. 19.💡 A battery lights 3 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
20. 20.🔋 6 identical 1.5 V cells are joined in series, but one of them is put in the wrong way round. What is the total voltage now (in volts)? =
21. 21.💡 4 identical bulbs are joined in series with a 4 V battery (ideal wires). How many volts does each bulb get? =
22. 22.💡 6 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 4 glow? (a) No (b) Yes
23. 23.🔌 Is a brass key a conductor or an insulator? (a) an insulator (b) a conductor
24. 24.🔘 When a switch is ON, the circuit is … (a) open (b) closed (c) broken (d) cut
25. 25.Which drawing is the symbol for a voltmeter? (a) many long-short pairs (b) one tall, one short bar (c) a circle with M inside (d) a circle with V inside
26. 26.🔋 How many 1.5 V cells must be joined in series to give 6 V?
27. 27.Which of these is an insulator? (a) a safety pin (b) a steel spoon (c) a woollen thread (d) a copper wire
28. 28.True or false: to touch a fallen wire is safe. (a) True (b) False
29. 29.🔦 A circuit has a used-up (dead) cell, a good bulb and a switch that is ON. All the wires are firmly joined. A gap in one wire is bridged by a graphite rod. Does the bulb glow? (a) Yes (b) No
30. 30.⚡ A bicycle dynamo changes which kind of energy into electricity? (a) light energy (b) sound energy (c) movement energy (d) chemical energy
31. 31.🔘 Which kind of switch slides side to side? (a) a tilt switch (b) a slide switch (c) a push button (d) a toggle switch
32. 32.⚡ What does a toaster mainly change electricity into? (a) movement (b) heat (c) sound (d) light
33. 33.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a ceramic cup across the gap. Does the bulb glow? (a) No (b) Yes
34. 34.True or false: on a cell, “the longer symbol line” means the − (negative) end. (a) True (b) False
35. 35.True or false: “one out, the rest glow” is true of a series circuit. (a) False (b) True
36. 36.Which drawing is the symbol for a switch? (a) two equal parallel lines (b) a circle with M inside (c) two or more cell symbols (d) a line lifted at a gap
37. 37.Which of these means the circuit is open? (a) the switch is ON (b) the bulb is unscrewed (c) all wires are joined (d) the loop is complete
38. 38.🔌 Why are electric wires covered in plastic? (a) plastic makes current (b) to make them heavy (c) plastic is a conductor (d) plastic is an insulator
39. 39.Which of these is a conductor? (a) a wooden stick (b) a rubber band (c) a metal paper clip (d) a ceramic cup
40. 40.🔘 Which kind of switch stays where you flip it? (a) a push button (b) a toggle switch (c) a reed switch (d) a slide switch

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