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Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 196 · 40 questions
TalentJR

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.

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  1. 1.⚡ A solar panel changes which kind of energy into electricity? (a) sound energy (b) wind energy (c) chemical energy (d) light energy
  2. 2.True or false: triangle, bar and arrows is the symbol for an LED. (a) True (b) False
  3. 3.True or false: if the switch is ON, the circuit is open and no current flows. (a) False (b) True
  4. 4.Which drawing is the symbol for a wire? (a) a straight line (b) a long and a short line (c) triangle against a bar (d) a circle with a cross
  5. 5.🔍 Which is the odd one out? (a) a school bell (b) a doorbell (c) a siren (d) an exhaust fan
  6. 6.✏️ Why do engineers draw circuits with symbols? (a) to make it colourful (b) symbols are heavier (c) to hide the circuit (d) quick and clear for all
  7. 7.Which of these means the circuit is open? (a) all wires are joined (b) the switch is OFF (c) the switch is ON (d) the loop is complete
  8. 8.🔁 Is the circuit closed or open if a cell is taken out? (a) closed (b) open
  9. 9.🔌 Is a ceramic cup a conductor or an insulator? (a) a conductor (b) an insulator
  10. 10.What does a tilt switch do? (a) works only while pressed (b) closes when tipped over (c) slides side to side (d) springs back when let go
  11. 11.🔦 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) Yes (b) No
  12. 12.💡 In a series circuit, how many paths does the current have? (a) none (b) one (c) two (d) one for each bulb
  13. 13.⚡ What does a toaster mainly change electricity into? (a) movement (b) light (c) heat (d) sound
  14. 14.💡 Old festival light strings went fully dark when one bulb failed. How were they joined? (a) in parallel (b) by Wi-Fi (c) in series (d) not joined
  15. 15.🔦 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 rubber band. Does the bulb glow? (a) Yes (b) No
  16. 16.🔦 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) No (b) Yes
  17. 17.Which of these is a conductor? (a) a copper wire (b) a glass marble (c) a plastic ruler (d) a dry cork
  18. 18.True or false: a straight line is the symbol for a wire. (a) True (b) False
  19. 19.⚠️ Is it safe to poke things in a socket? (a) safe (b) not safe
  20. 20.🔦 A circuit has a new cell, a good bulb and a switch that is OFF. All the wires are firmly joined. A gap in one wire is bridged by a brass key. Does the bulb glow? (a) No (b) Yes
  21. 21.🔋 On a cell, does “the shorter symbol line” mean the + end or the − end? (a) − (negative) (b) + (positive)
  22. 22.True or false: a dry cork is a conductor. (a) True (b) False
  23. 23.🔍 Which is the odd one out? (a) an iron nail (b) a paper strip (c) a woollen thread (d) a wooden stick
  24. 24.🔗 Series or parallel circuit: “many paths for current”? (a) parallel (b) series
  25. 25.Which of these uses electricity? (a) a power station (b) a refrigerator (c) a bicycle dynamo (d) a battery
  26. 26.🔘 A cell, a bulb and switches A, B, C and D are joined one after another in a single loop (series). A is ON, B is ON, C is OFF and D is ON. Does the bulb glow? (a) Yes (b) No
  27. 27.Which of these means the circuit is open? (a) a wire is cut (b) the loop is complete (c) all wires are joined (d) the switch is ON
  28. 28.🔋 What is a battery? (a) a switch with a lid (b) one single wire (c) two or more cells joined (d) a kind of bulb
  29. 29.Which of these is safe? (a) climb an electric pole (b) dry your hands first (c) touch a switch when wet (d) open a phone charger
  30. 30.✏️ In a circuit diagram, which part is drawn as two equal parallel lines? (a) capacitor (b) resistor (c) battery (d) LED
  31. 31.🔌 Is a wooden stick a conductor or an insulator? (a) an insulator (b) a conductor
  32. 32.⚠️ Is it safe to stop if a part gets hot? (a) safe (b) not safe
  33. 33.🔍 Which is the odd one out? (a) use small battery cells (b) take cells out after use (c) build with an adult near (d) touch a fallen wire
  34. 34.True or false: “a break stops every bulb” is true of a series circuit. (a) False (b) True
  35. 35.⚠️ Is it safe to touch a switch when wet? (a) safe (b) not safe
  36. 36.💡 A battery lights 3 identical bulbs joined in parallel. One more identical bulb is added in parallel. How do the bulbs glow now? (a) dimmer (b) brighter (c) the same
  37. 37.🔍 Which is the odd one out? (a) stop if a part gets hot (b) climb an electric pole (c) build with an adult near (d) fly kites in open fields
  38. 38.True or false: to use mains for a project is not safe. (a) False (b) True
  39. 39.True or false: a loudspeaker mainly makes movement. (a) False (b) True
  40. 40.🔁 Is the circuit closed or open if the switch is ON? (a) open (b) closed

Answer key

  1. light energy
  2. True
  3. False
  4. a straight line
  5. an exhaust fan
  6. quick and clear for all
  7. the switch is OFF
  8. open
  9. an insulator
  10. closes when tipped over
  11. No
  12. one
  13. heat
  14. in series
  15. No
  16. No
  17. a copper wire
  18. True
  19. not safe
  20. No
  21. − (negative)
  22. False
  23. an iron nail
  24. parallel
  25. a refrigerator
  26. No
  27. a wire is cut
  28. two or more cells joined
  29. dry your hands first
  30. capacitor
  31. an insulator
  32. safe
  33. touch a fallen wire
  34. True
  35. not safe
  36. the same
  37. climb an electric pole
  38. True
  39. False
  40. closed

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