Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 94 · 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 kind of switch springs back when let go? (a) a push button (b) a tilt switch (c) a slide switch (d) a reed switch
2. 2.🔗 Series or parallel circuit: “own switch for each bulb”? (a) parallel (b) series
3. 3.🔦 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) Yes (b) No
4. 4.🔋 On a cell, does “the end with a bump” mean the + end or the − end? (a) − (negative) (b) + (positive)
5. 5.⚡ What does an exhaust fan mainly change electricity into? (a) heat (b) light (c) movement (d) sound
6. 6.🔍 Which is the odd one out? (a) poke things in a socket (b) take cells out after use (c) use mains for a project (d) touch a fallen wire
7. 7.True or false: a reed switch closes near a magnet. (a) False (b) True
8. 8.True or false: a school bell mainly makes movement. (a) True (b) False
9. 9.⚠️ Is it safe to build with an adult near? (a) not safe (b) safe
10. 10.💡 4 identical bulbs are in parallel and each one takes 0.25 A. What total current (in amperes) comes from the battery? =
11. 11.🔗 Series or parallel circuit: “bulbs share the voltage”? (a) series (b) parallel
12. 12.🔌 Is a paper strip a conductor or an insulator? (a) an insulator (b) a conductor
13. 13.True or false: if a wire is cut, the circuit is closed and current flows. (a) True (b) False
14. 14.✏️ Why do engineers draw circuits with symbols? (a) quick and clear for all (b) symbols are heavier (c) to make it colourful (d) to hide the circuit
15. 15.🔘 Which kind of switch closes near a magnet? (a) a push button (b) a tilt switch (c) a toggle switch (d) a reed switch
16. 16.Which drawing is the symbol for a junction? (a) a plain rectangle (b) a long and a short line (c) a dot where wires meet (d) a straight line
17. 17.✏️ In a circuit diagram, which part is drawn as a circle with M inside? (a) wire (b) ammeter (c) motor (d) LED
18. 18.True or false: if the bulb is unscrewed, the circuit is closed and current flows. (a) True (b) False
19. 19.🔍 Which is the odd one out? (a) a table fan (b) a torch (c) a ceiling fan (d) an exhaust fan
20. 20.True or false: “own switch for each bulb” is true of a parallel circuit. (a) False (b) True
21. 21.True or false: an electric kettle mainly makes movement. (a) True (b) False
22. 22.🔘 Which kind of switch works only while pressed? (a) a reed switch (b) a toggle switch (c) a tilt switch (d) a push button
23. 23.What does a reed switch do? (a) flips up or down (b) closes near a magnet (c) works only while pressed (d) closes when tipped over
24. 24.True or false: a mixer grinder mainly makes movement. (a) True (b) False
25. 25.🔌 Is a safety pin a conductor or an insulator? (a) an insulator (b) a conductor
26. 26.💡 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. All the bulbs are in place. Does bulb 1 glow? (a) No (b) Yes
27. 27.True or false: “used in house wiring” is true of a series circuit. (a) True (b) False
28. 28.🔁 What do we call a circuit with a break in it? (a) a closed circuit (b) a full circuit (c) a series circuit (d) an open circuit
29. 29.⚠️ Someone is getting a shock and is still touching a wire. What should you do? (a) shout for an adult (b) pour water on them (c) wait and watch (d) pull them by the hand
30. 30.🔋 Identical cells side by side (in parallel) give … (a) double the voltage (b) half the voltage (c) no voltage (d) the same voltage
31. 31.🔋 How many volts does one ordinary torch cell give? (a) 1.5 V (b) 0.5 V (c) 15 V (d) 230 V
32. 32.True or false: a steel spoon is an insulator. (a) True (b) False
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) brighter (c) dimmer
34. 34.What does a slide switch do? (a) slides side to side (b) stays where you flip it (c) works only while pressed (d) closes when tipped over
35. 35.Which of these mainly makes sound? (a) a toaster (b) a torch (c) a siren (d) an exhaust fan
36. 36.🔋 Does a battery give electricity or use electricity? (a) uses electricity (b) gives electricity
37. 37.🔋 Does a solar panel give electricity or use electricity? (a) uses electricity (b) gives electricity
38. 38.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a glass marble across the gap. Does the bulb glow? (a) Yes (b) No
39. 39.True or false: to fly kites in open fields is not safe. (a) True (b) False
40. 40.⚡ What does a night lamp mainly change electricity into? (a) movement (b) light (c) heat (d) sound

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