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Electronics Worksheet: Conductors and Insulators

Electronics lesson 3: Conductors and insulators · Set 80 · 40 questions
TalentJR

Remember (Metal passes, plastic blocks): Conductors: metals (copper, iron, steel, aluminium, brass) and graphite. Insulators: rubber, plastic, wood, glass, paper, cotton, wool, cork, ceramic and dry air. Tester: put the object across the gap — the bulb glows only for a conductor.

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  1. 1.Which of these is a conductor? (a) a rubber eraser (b) a dry cork (c) a paper strip (d) a graphite rod
  2. 2.True or false: a graphite rod is a conductor. (a) True (b) False
  3. 3.True or false: an iron nail is a conductor. (a) True (b) False
  4. 4.🔌 Is a brass key a conductor or an insulator? (a) an insulator (b) a conductor
  5. 5.🔌 Why are electric wires covered in plastic? (a) plastic is a conductor (b) plastic is an insulator (c) to make them heavy (d) plastic makes current
  6. 6.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a dry cork across the gap. Does the bulb glow? (a) Yes (b) No
  7. 7.True or false: a brass key is an insulator. (a) True (b) False
  8. 8.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a steel spoon across the gap. Does the bulb glow? (a) Yes (b) No
  9. 9.True or false: a metal paper clip is a conductor. (a) True (b) False
  10. 10.🔌 Is a rubber band a conductor or an insulator? (a) an insulator (b) a conductor
  11. 11.Which of these is a conductor? (a) a paper strip (b) a rubber band (c) a wooden stick (d) a brass key
  12. 12.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a wooden stick across the gap. Does the bulb glow? (a) Yes (b) No
  13. 13.🔍 Which is the odd one out? (a) a cotton thread (b) a dry cork (c) a metal paper clip (d) a plastic straw
  14. 14.True or false: a wooden stick is an insulator. (a) True (b) False
  15. 15.Which of these is an insulator? (a) a brass key (b) aluminium foil (c) a rubber band (d) a copper wire
  16. 16.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a plastic straw across the gap. Does the bulb glow? (a) No (b) Yes
  17. 17.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a cotton thread across the gap. Does the bulb glow? (a) Yes (b) No
  18. 18.True or false: a rubber eraser is a conductor. (a) False (b) True
  19. 19.Which of these is an insulator? (a) a steel coin (b) a graphite rod (c) a rubber eraser (d) a safety pin
  20. 20.True or false: a wooden stick is a conductor. (a) False (b) True
  21. 21.🔌 Which part of a screwdriver should an electrician hold? (a) the steel shaft (b) the metal tip (c) the bare end (d) the plastic handle
  22. 22.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put an iron nail across the gap. Does the bulb glow? (a) No (b) Yes
  23. 23.🔌 Is a cotton thread a conductor or an insulator? (a) a conductor (b) an insulator
  24. 24.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a rubber eraser across the gap. Does the bulb glow? (a) Yes (b) No
  25. 25.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a copper wire across the gap. Does the bulb glow? (a) No (b) Yes
  26. 26.Which of these is an insulator? (a) a safety pin (b) a graphite rod (c) a dry cork (d) a steel spoon
  27. 27.🔦 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) Yes (b) No
  28. 28.🔌 Which metal is used for most electric wires at home? (a) glass (b) rubber (c) copper (d) plastic
  29. 29.🔌 Is aluminium foil a conductor or an insulator? (a) an insulator (b) a conductor
  30. 30.🔍 Which is the odd one out? (a) a wooden stick (b) an iron nail (c) aluminium foil (d) a brass key
  31. 31.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put aluminium foil across the gap. Does the bulb glow? (a) Yes (b) No
  32. 32.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a safety pin across the gap. Does the bulb glow? (a) No (b) Yes
  33. 33.🔍 Which is the odd one out? (a) a woollen thread (b) a ceramic cup (c) a rubber eraser (d) a steel coin
  34. 34.🔍 Which is the odd one out? (a) an iron nail (b) a rubber eraser (c) a brass key (d) a graphite rod
  35. 35.True or false: a steel coin is an insulator. (a) True (b) False
  36. 36.🔌 Is a graphite rod a conductor or an insulator? (a) a conductor (b) an insulator
  37. 37.🔍 Which is the odd one out? (a) a glass marble (b) a steel spoon (c) a copper wire (d) an iron nail
  38. 38.🔍 Which is the odd one out? (a) an iron nail (b) a dry cork (c) a wooden stick (d) a paper strip
  39. 39.Which of these is a conductor? (a) a plastic ruler (b) an iron nail (c) a plastic straw (d) a paper strip
  40. 40.Which of these is a conductor? (a) a cotton thread (b) a rubber eraser (c) a woollen thread (d) a safety pin

Answer key

  1. a graphite rod
  2. True
  3. True
  4. a conductor
  5. plastic is an insulator
  6. No
  7. False
  8. Yes
  9. True
  10. an insulator
  11. a brass key
  12. No
  13. a metal paper clip
  14. True
  15. a rubber band
  16. No
  17. No
  18. False
  19. a rubber eraser
  20. False
  21. the plastic handle
  22. Yes
  23. an insulator
  24. No
  25. Yes
  26. a dry cork
  27. No
  28. copper
  29. a conductor
  30. a wooden stick
  31. Yes
  32. Yes
  33. a steel coin
  34. a rubber eraser
  35. False
  36. a conductor
  37. a glass marble
  38. an iron nail
  39. an iron nail
  40. a safety pin

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