Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 212 · 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.⚡ What does a siren mainly change electricity into? (a) heat (b) sound (c) light (d) movement
2. 2.What does a tilt switch do? (a) closes near a magnet (b) stays where you flip it (c) works only while pressed (d) closes when tipped over
3. 3.🔌 Which metal is used for most electric wires at home? (a) copper (b) glass (c) plastic (d) rubber
4. 4.Which of these is true of a series circuit? (a) one out, the rest glow (b) each gets the full volts (c) one bulb out, all go out (d) many paths for current
5. 5.✏️ In a circuit diagram, which part is drawn as two or more cell symbols? (a) voltmeter (b) battery (c) capacitor (d) switch
6. 6.🔋 How many 1.2 V cells must be joined in series to give 7.2 V?
7. 7.Which of these mainly makes sound? (a) a mixer grinder (b) a buzzer (c) a torch (d) an electric kettle
8. 8.🔋 On a cell, does “the longer symbol line” mean the + end or the − end? (a) − (negative) (b) + (positive)
9. 9.True or false: one tall, one short bar is the symbol for a voltmeter. (a) True (b) False
10. 10.True or false: a dry cork is an insulator. (a) False (b) True
11. 11.🔘 Which kind of switch springs back when let go? (a) a slide switch (b) a toggle switch (c) a push button (d) a reed switch
12. 12.🔋 Does a battery give electricity or use electricity? (a) uses electricity (b) gives electricity
13. 13.🔍 Which is the odd one out? (a) a traffic signal (b) a mixer grinder (c) an LED lamp (d) a torch
14. 14.🔘 Which kind of switch works only while pressed? (a) a slide switch (b) a tilt switch (c) a push button (d) a reed switch
15. 15.✏️ In a circuit diagram, which part is drawn as a plain rectangle? (a) diode (b) resistor (c) LED (d) cell
16. 16.✏️ In a circuit diagram, which part is drawn as a circle with V inside? (a) voltmeter (b) ammeter (c) junction (d) resistor
17. 17.🔌 Is a glass marble a conductor or an insulator? (a) a conductor (b) an insulator
18. 18.⚠️ Why must we never touch switches with wet hands? (a) water makes it cold (b) it is just untidy (c) water carries current (d) it spoils the paint
19. 19.💡 4 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 2 and 3 are taken out of their holders. How many bulbs glow?
20. 20.🔋 Does a generator give electricity or use electricity? (a) gives electricity (b) uses electricity
21. 21.🔍 Which is the odd one out? (a) a steel coin (b) a rubber eraser (c) a paper strip (d) a woollen thread
22. 22.Which of these is true of a series circuit? (a) used in house wiring (b) many paths for current (c) each gets the full volts (d) bulbs share the voltage
23. 23.True or false: a copper wire is an insulator. (a) False (b) True
24. 24.Which of these gives us electricity? (a) an air conditioner (b) a television (c) a refrigerator (d) a battery
25. 25.🔦 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 wooden stick. Does the bulb glow? (a) No (b) Yes
26. 26.✏️ In a cell symbol, which line is the + terminal? (a) the shorter line (b) both lines (c) neither line (d) the longer line
27. 27.True or false: a steel coin is an insulator. (a) True (b) False
28. 28.Which of these is not safe? (a) stay away from pylons (b) dry your hands first (c) stop if a part gets hot (d) climb an electric pole
29. 29.💡 6 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?
30. 30.Which of these is true of a series circuit? (a) one out, the rest glow (b) many paths for current (c) a single current path (d) each gets the full volts
31. 31.🔋 What is a battery? (a) a kind of bulb (b) one single wire (c) a switch with a lid (d) two or more cells joined
32. 32.🔌 Is aluminium foil a conductor or an insulator? (a) an insulator (b) a conductor
33. 33.💡 A battery lights 2 identical bulbs joined in series. One more identical bulb is added in series. How do the bulbs glow now? (a) the same (b) dimmer (c) brighter
34. 34.🔌 Is a wooden stick a conductor or an insulator? (a) a conductor (b) an insulator
35. 35.⚠️ Is it safe to climb an electric pole? (a) not safe (b) safe
36. 36.🔍 Which is the odd one out? (a) a toaster (b) a room heater (c) an electric kettle (d) a night lamp
37. 37.⚡ A bicycle dynamo changes which kind of energy into electricity? (a) sound energy (b) movement energy (c) chemical energy (d) light energy
38. 38.True or false: “one out, the rest glow” is true of a parallel circuit. (a) False (b) True
39. 39.True or false: an LED lamp mainly gives out light. (a) False (b) True
40. 40.What does a reed switch do? (a) springs back when let go (b) slides side to side (c) works only while pressed (d) closes near a magnet

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