Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 510 · 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.True or false: a loudspeaker mainly makes sound. (a) False (b) True
2. 2.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a rubber band across the gap. Does the bulb glow? (a) No (b) Yes
3. 3.🔌 Is a paper strip a conductor or an insulator? (a) a conductor (b) an insulator
4. 4.✏️ In a circuit diagram, wires are usually drawn as … (a) little stars (b) dotted circles (c) straight lines (d) wavy lines
5. 5.🔦 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) No (b) Yes
6. 6.🔋 How many 1.2 V cells must be joined in series to give 3.6 V?
7. 7.⚠️ Someone is getting a shock and is still touching a wire. What should you do? (a) wait and watch (b) shout for an adult (c) pull them by the hand (d) pour water on them
8. 8.Which of these mainly makes movement? (a) a water heater (b) an exhaust fan (c) a room heater (d) an electric iron
9. 9.🔁 In an old-style bulb, which thin wire glows when current flows? (a) the filament (b) the switch (c) the base (d) the glass
10. 10.Which of these means the circuit is closed? (a) a wire is cut (b) the bulb is unscrewed (c) a wire has come loose (d) the loop is complete
11. 11.⚡ What does an electric kettle mainly change electricity into? (a) light (b) movement (c) sound (d) heat
12. 12.🔘 When a switch is ON, the circuit is … (a) broken (b) open (c) closed (d) cut
13. 13.⚡ A fan changes electrical energy mainly into which kind of energy? (a) movement energy (b) sound energy (c) chemical energy (d) light energy
14. 14.Which of these mainly gives out light? (a) a school bell (b) a buzzer (c) a torch (d) a water heater
15. 15.🔋 Does a solar panel give electricity or use electricity? (a) gives electricity (b) uses electricity
16. 16.💡 4 identical bulbs are joined in parallel across a 12 V battery (ideal wires). How many volts does each bulb get? =
17. 17.⚠️ Is it safe to take cells out after use? (a) not safe (b) safe
18. 18.🔘 What does a switch do in a circuit? (a) opens or closes the loop (b) stores current (c) makes electricity (d) changes the voltage
19. 19.⚡ What do we call a flow of electric charge through a wire? (a) friction (b) sound (c) electric current (d) a magnet
20. 20.Which drawing is the symbol for a cell? (a) a circle with M inside (b) triangle against a bar (c) a circle with an X in it (d) one tall, one short bar
21. 21.🔍 Which is the odd one out? (a) stop if a part gets hot (b) use small battery cells (c) build with an adult near (d) open a phone charger
22. 22.True or false: to dry your hands first is safe. (a) False (b) True
23. 23.✏️ In a circuit diagram, which part is drawn as two or more cell symbols? (a) battery (b) wire (c) LED (d) voltmeter
24. 24.🔘 A cell and a bulb are joined to 4 side-by-side paths with one switch on each path — A, B, C and D (parallel). A is OFF, B is ON, C is ON and D is ON. Does the bulb glow? (a) Yes (b) No
25. 25.True or false: “many paths for current” is true of a parallel circuit. (a) False (b) True
26. 26.True or false: a tilt switch stays where you flip it. (a) True (b) False
27. 27.Which drawing is the symbol for a wire? (a) triangle, bar and arrows (b) a plain rectangle (c) a small empty box (d) a straight line
28. 28.🔋 How many volts does one ordinary torch cell give? (a) 0.5 V (b) 1.5 V (c) 15 V (d) 230 V
29. 29.⚠️ Who should be with you when you build a circuit? (a) a younger child (b) a stranger online (c) a trusted adult (d) nobody
30. 30.🔗 Series or parallel circuit: “own switch for each bulb”? (a) series (b) parallel
31. 31.🔍 Which is the odd one out? (a) use small battery cells (b) stop if a part gets hot (c) climb an electric pole (d) take cells out after use
32. 32.Which of these is true of a series circuit? (a) many paths for current (b) each gets the full volts (c) bulbs share the voltage (d) used in house wiring
33. 33.Which of these mainly makes movement? (a) a rice cooker (b) a buzzer (c) a mixer grinder (d) a street light
34. 34.🔋 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)? =
35. 35.Which of these mainly gives out light? (a) an electric drill (b) a water heater (c) a mixer grinder (d) a night lamp
36. 36.Which of these is true of a series circuit? (a) each gets the full volts (b) a break stops every bulb (c) own switch for each bulb (d) used in house wiring
37. 37.🔋 On a cell, does “the shorter symbol line” mean the + end or the − end? (a) + (positive) (b) − (negative)
38. 38.What does a reed switch do? (a) closes near a magnet (b) works only while pressed (c) springs back when let go (d) slides side to side
39. 39.🔋 On a cell, does “the longer symbol line” mean the + end or the − end? (a) + (positive) (b) − (negative)
40. 40.Which of these is true of a series circuit? (a) one out, the rest glow (b) one bulb out, all go out (c) own switch for each bulb (d) each gets the full volts

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