Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 908 · 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 longer symbol line” mean the + end or the − end? (a) + (positive) (b) − (negative)
2. 2.⚡ Which tiny particles drift along a metal wire to carry the current? (a) electrons (b) water drops (c) dust particles (d) photons
3. 3.🔋 3 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)? =
4. 4.⚡ A solar panel changes which kind of energy into electricity? (a) chemical energy (b) sound energy (c) wind energy (d) light energy
5. 5.💡 Old festival light strings went fully dark when one bulb failed. How were they joined? (a) in parallel (b) in series (c) by Wi-Fi (d) not joined
6. 6.🔍 Which is the odd one out? (a) a wooden stick (b) a plastic ruler (c) a brass key (d) a ceramic cup
7. 7.True or false: a circle with M inside is the symbol for a motor. (a) True (b) False
8. 8.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a paper strip across the gap. Does the bulb glow? (a) No (b) Yes
9. 9.🔍 Which is the odd one out? (a) stop if a part gets hot (b) dry your hands first (c) open a phone charger (d) build with an adult near
10. 10.✏️ Why do engineers draw circuits with symbols? (a) symbols are heavier (b) to make it colourful (c) quick and clear for all (d) to hide the circuit
11. 11.🔦 A circuit has a new cell, a good bulb and a switch that is ON. One wire has come loose from the cell. Does the bulb glow? (a) No (b) Yes
12. 12.🔦 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 paper strip. Does the bulb glow? (a) No (b) Yes
13. 13.Which of these is true of a parallel circuit? (a) a break stops every bulb (b) a single current path (c) many paths for current (d) one bulb out, all go out
14. 14.🔗 Series or parallel circuit: “a break stops every bulb”? (a) parallel (b) series
15. 15.💡 2 identical bulbs are in parallel and each one takes 0.5 A. What total current (in amperes) comes from the battery? =
16. 16.Which of these is a conductor? (a) a glass marble (b) a woollen thread (c) a steel spoon (d) a paper strip
17. 17.🔘 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) Yes (b) No
18. 18.🔋 2 identical 1.2 V cells are joined side by side in parallel (all + ends together, all − ends together). What is the voltage across them (in volts)? =
19. 19.Which of these mainly gives out heat? (a) a tube light (b) an LED lamp (c) a toaster (d) an electric toy car
20. 20.True or false: “one bulb out, all go out” is true of a series circuit. (a) False (b) True
21. 21.🔦 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) Yes (b) No
22. 22.What does a toggle switch do? (a) closes when tipped over (b) stays where you flip it (c) works only while pressed (d) springs back when let go
23. 23.⚡ What does a siren mainly change electricity into? (a) movement (b) light (c) sound (d) heat
24. 24.🔘 Which kind of switch flips up or down? (a) a slide switch (b) a push button (c) a toggle switch (d) a reed switch
25. 25.Which drawing is the symbol for a cell? (a) a straight line (b) triangle, bar and arrows (c) a circle with V inside (d) one tall, one short bar
26. 26.✏️ In a circuit diagram, which part is drawn as a circle with V inside? (a) voltmeter (b) capacitor (c) resistor (d) junction
27. 27.⚠️ Who should be with you when you build a circuit? (a) nobody (b) a stranger online (c) a younger child (d) a trusted adult
28. 28.🔦 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 woollen thread. Does the bulb glow? (a) No (b) Yes
29. 29.🔘 Which kind of switch slides side to side? (a) a reed switch (b) a push button (c) a toggle switch (d) a slide switch
30. 30.🔋 2 identical 3 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
31. 31.🔗 Series or parallel circuit: “one out, the rest glow”? (a) parallel (b) series
32. 32.True or false: on a cell, “the flat end” means the − (negative) end. (a) False (b) True
33. 33.Which of these is a conductor? (a) a rubber eraser (b) a plastic ruler (c) a wooden stick (d) aluminium foil
34. 34.🔘 A cell and a bulb are joined to two side-by-side paths: path 1 has switches A and B one after another, path 2 has switch C. A is OFF, B is OFF and C is ON. Does the bulb glow? (a) Yes (b) No
35. 35.💡 5 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. All the bulbs are in place. How many bulbs glow?
36. 36.Which of these mainly gives out light? (a) an LED lamp (b) a ceiling fan (c) a doorbell (d) a toaster
37. 37.Which of these uses electricity? (a) a generator (b) a wind turbine (c) a solar panel (d) a mobile phone
38. 38.Which of these gives us electricity? (a) a computer (b) a refrigerator (c) a generator (d) a television
39. 39.🔘 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 OFF, C is ON and D is OFF. Does the bulb glow? (a) Yes (b) No
40. 40.🔌 Which metal is used for most electric wires at home? (a) glass (b) copper (c) rubber (d) plastic

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