Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 556 · 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 power source should children use for electronics projects? (a) an inverter socket (b) a small battery pack (c) a wall socket (d) a mains extension board
2. 2.🔗 Series or parallel circuit: “bulbs share the voltage”? (a) parallel (b) series
3. 3.🔁 Is the circuit closed or open if the switch is ON? (a) open (b) closed
4. 4.Which of these is an insulator? (a) a copper wire (b) an iron nail (c) a ceramic cup (d) a safety pin
5. 5.⚠️ What protects home wiring by melting or tripping when too much current flows? (a) a bulb (b) a plug top (c) a fuse or MCB (d) a long wire
6. 6.💡 In a series circuit, how many paths does the current have? (a) none (b) one (c) one for each bulb (d) two
7. 7.🔋 Does a bicycle dynamo give electricity or use electricity? (a) gives electricity (b) uses electricity
8. 8.Which of these mainly makes movement? (a) a tube light (b) a mixer grinder (c) a rice cooker (d) a buzzer
9. 9.🔋 Cells joined + to − in a row (series) give … (a) the same voltage (b) a bigger voltage (c) a smaller voltage (d) no voltage
10. 10.🔌 Most metals are good … (a) magnets only (b) conductors (c) batteries (d) insulators
11. 11.🔗 Series or parallel circuit: “used in house wiring”? (a) series (b) parallel
12. 12.✏️ In a circuit diagram, wires are usually drawn as … (a) little stars (b) straight lines (c) dotted circles (d) wavy lines
13. 13.True or false: a metal paper clip is an insulator. (a) True (b) False
14. 14.True or false: a safety pin is a conductor. (a) True (b) False
15. 15.🔌 A gap of dry air between two wires acts as … (a) an insulator (b) a cell (c) a conductor (d) a switch that is ON
16. 16.What does a toggle switch do? (a) closes near a magnet (b) closes when tipped over (c) springs back when let go (d) stays where you flip it
17. 17.🔍 Which is the odd one out? (a) an iron nail (b) a brass key (c) a paper strip (d) aluminium foil
18. 18.✏️ In a cell symbol, which line is the + terminal? (a) neither line (b) both lines (c) the shorter line (d) the longer line
19. 19.🔋 What is a battery? (a) two or more cells joined (b) one single wire (c) a switch with a lid (d) a kind of bulb
20. 20.Which of these is a conductor? (a) a plastic ruler (b) a rubber band (c) a glass marble (d) aluminium foil
21. 21.True or false: “each gets the full volts” is true of a series circuit. (a) False (b) True
22. 22.True or false: two or more cell symbols is the symbol for a battery. (a) False (b) True
23. 23.✏️ Why do engineers draw circuits with symbols? (a) quick and clear for all (b) to make it colourful (c) symbols are heavier (d) to hide the circuit
24. 24.🔋 A 3 V battery and three 1.5 V cells are joined in series, all facing the same way. What is the total voltage (in volts)? =
25. 25.🔋 7 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)? =
26. 26.💡 3 identical bulbs are in parallel and each bulb has its own switch on its path. 1 of the switches is OFF and the rest are ON. How many bulbs glow?
27. 27.True or false: “many paths for current” is true of a series circuit. (a) False (b) True
28. 28.Which of these means the circuit is closed? (a) a cell is taken out (b) a wire has come loose (c) the loop is complete (d) the switch is OFF
29. 29.🔁 Is the circuit closed or open if the bulb is unscrewed? (a) closed (b) open
30. 30.What does a slide switch do? (a) flips up or down (b) closes near a magnet (c) stays where you flip it (d) slides side to side
31. 31.🔁 Is the circuit closed or open if all wires are joined? (a) closed (b) open
32. 32.Which of these mainly makes sound? (a) a toaster (b) a night lamp (c) a buzzer (d) a torch
33. 33.True or false: to dry your hands first is safe. (a) False (b) True
34. 34.💡 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
35. 35.🔋 A 6 V battery and two 1.5 V cells are joined in series, all facing the same way. What is the total voltage (in volts)? =
36. 36.⚡ A bicycle dynamo changes which kind of energy into electricity? (a) light energy (b) chemical energy (c) movement energy (d) sound energy
37. 37.True or false: a reed switch closes near a magnet. (a) True (b) False
38. 38.🔋 How many 1.5 V cells must be joined in series to give 7.5 V?
39. 39.🔌 Is aluminium foil a conductor or an insulator? (a) an insulator (b) a conductor
40. 40.🔋 Does a power station give electricity or use electricity? (a) uses electricity (b) gives electricity

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