Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 174 · 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.🔘 Two switches are in parallel (side by side). When does the bulb glow? (a) only when both are ON (b) when either is ON (c) only when both are OFF (d) never
3. 3.True or false: “one out, the rest glow” is true of a series circuit. (a) False (b) True
4. 4.🔌 Most metals are good … (a) conductors (b) insulators (c) magnets only (d) batteries
5. 5.💡 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
6. 6.True or false: “a single current path” is true of a parallel circuit. (a) False (b) True
7. 7.🔘 Which kind of switch closes when tipped over? (a) a slide switch (b) a reed switch (c) a toggle switch (d) a tilt switch
8. 8.🔋 How many 3 V cells must be joined in series to give 18 V?
9. 9.🔍 Which is the odd one out? (a) a safety pin (b) a copper wire (c) an iron nail (d) a paper strip
10. 10.True or false: a push button springs back when let go. (a) True (b) False
11. 11.✏️ In a cell symbol, which line is the + terminal? (a) the longer line (b) neither line (c) both lines (d) the shorter line
12. 12.💡 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. Bulbs 1 and 2 are taken out of their holders. Does bulb 3 glow? (a) Yes (b) No
13. 13.🔋 Does a power station give electricity or use electricity? (a) uses electricity (b) gives electricity
14. 14.🔋 A 3 V battery and two 1.5 V cells are joined in series, all facing the same way. What is the total voltage (in volts)? =
15. 15.Which drawing is the symbol for a motor? (a) triangle, bar and arrows (b) a long and a short line (c) a plain rectangle (d) a circle with M inside
16. 16.True or false: a buzzer mainly makes sound. (a) False (b) True
17. 17.✏️ Why do engineers draw circuits with symbols? (a) symbols are heavier (b) to hide the circuit (c) quick and clear for all (d) to make it colourful
18. 18.True or false: a reed switch closes near a magnet. (a) True (b) False
19. 19.✏️ In a circuit diagram, which part is drawn as a straight line? (a) capacitor (b) switch (c) wire (d) motor
20. 20.✏️ In a circuit diagram, which part is drawn as a circle with A inside? (a) bulb (b) motor (c) ammeter (d) switch
21. 21.✏️ In a circuit diagram, wires are usually drawn as … (a) wavy lines (b) dotted circles (c) straight lines (d) little stars
22. 22.Which of these mainly gives out light? (a) a buzzer (b) a toaster (c) a siren (d) a night lamp
23. 23.What does a tilt switch do? (a) slides side to side (b) springs back when let go (c) closes when tipped over (d) closes near a magnet
24. 24.💡 Old festival light strings went fully dark when one bulb failed. How were they joined? (a) in series (b) not joined (c) by Wi-Fi (d) in parallel
25. 25.🔍 Which is the odd one out? (a) a toaster (b) a school bell (c) a water heater (d) an electric kettle
26. 26.⚡ A solar panel changes which kind of energy into electricity? (a) sound energy (b) wind energy (c) chemical energy (d) light energy
27. 27.🔦 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
28. 28.🔍 Which is the odd one out? (a) dry your hands first (b) build with an adult near (c) stop if a part gets hot (d) open a phone charger
29. 29.Which drawing is the symbol for a cell? (a) a line lifted at a gap (b) a circle with A inside (c) a long and a short line (d) a small empty box
30. 30.🔌 Is a rubber eraser a conductor or an insulator? (a) an insulator (b) a conductor
31. 31.🔘 Which kind of switch works only while pressed? (a) a toggle switch (b) a reed switch (c) a slide switch (d) a push button
32. 32.🔦 A circuit has a used-up (dead) cell, a good bulb and a switch that is ON. All the wires are firmly joined. Does the bulb glow? (a) Yes (b) No
33. 33.🔋 Does a washing machine give electricity or use electricity? (a) gives electricity (b) uses electricity
34. 34.Which of these is an insulator? (a) a metal paper clip (b) a rubber eraser (c) a steel spoon (d) aluminium foil
35. 35.🔌 Is a steel spoon a conductor or an insulator? (a) a conductor (b) an insulator
36. 36.🔍 Which is the odd one out? (a) a loudspeaker (b) a doorbell (c) a tube light (d) a siren
37. 37.What does a reed switch do? (a) closes near a magnet (b) springs back when let go (c) slides side to side (d) works only while pressed
38. 38.True or false: a safety pin is a conductor. (a) True (b) False
39. 39.True or false: to build with an adult near is safe. (a) True (b) False
40. 40.🔦 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) Yes (b) No

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