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Electronics Worksheet: Conductors and Insulators

Electronics lesson 3: Conductors and insulators · Set 76 · 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.🔌 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
  2. 2.🔌 Is a safety pin a conductor or an insulator? (a) an insulator (b) a conductor
  3. 3.🔌 Is a woollen thread a conductor or an insulator? (a) an insulator (b) a conductor
  4. 4.🔦 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
  5. 5.🔍 Which is the odd one out? (a) a steel coin (b) a cotton thread (c) a copper wire (d) a graphite rod
  6. 6.🔍 Which is the odd one out? (a) a steel coin (b) a glass marble (c) an iron nail (d) a copper wire
  7. 7.🔦 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) Yes (b) No
  8. 8.🔍 Which is the odd one out? (a) a dry cork (b) a wooden stick (c) a rubber eraser (d) an iron nail
  9. 9.🔌 Is aluminium foil a conductor or an insulator? (a) a conductor (b) an insulator
  10. 10.True or false: a plastic straw is an insulator. (a) False (b) True
  11. 11.True or false: a glass marble is an insulator. (a) True (b) False
  12. 12.🔦 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
  13. 13.🔌 Most metals are good … (a) batteries (b) conductors (c) magnets only (d) insulators
  14. 14.🔦 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
  15. 15.Which of these is an insulator? (a) a steel spoon (b) aluminium foil (c) a ceramic cup (d) a safety pin
  16. 16.🔌 Is a rubber band a conductor or an insulator? (a) a conductor (b) an insulator
  17. 17.Which of these is a conductor? (a) a dry cork (b) a steel spoon (c) a plastic ruler (d) a cotton thread
  18. 18.🔦 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
  19. 19.🔌 Is a cotton thread a conductor or an insulator? (a) an insulator (b) a conductor
  20. 20.🔌 Is a brass key a conductor or an insulator? (a) a conductor (b) an insulator
  21. 21.🔌 Is a rubber eraser a conductor or an insulator? (a) an insulator (b) a conductor
  22. 22.🔌 Is a steel spoon a conductor or an insulator? (a) a conductor (b) an insulator
  23. 23.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a brass key across the gap. Does the bulb glow? (a) No (b) Yes
  24. 24.Which of these is an insulator? (a) a metal paper clip (b) a dry cork (c) a copper wire (d) a steel coin
  25. 25.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a woollen thread across the gap. Does the bulb glow? (a) Yes (b) No
  26. 26.🔌 Is a dry cork a conductor or an insulator? (a) an insulator (b) a conductor
  27. 27.🔦 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
  28. 28.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a steel coin across the gap. Does the bulb glow? (a) Yes (b) No
  29. 29.Which of these is a conductor? (a) a glass marble (b) a dry cork (c) a graphite rod (d) a plastic ruler
  30. 30.Which of these is a conductor? (a) a plastic ruler (b) a rubber band (c) an iron nail (d) a paper strip
  31. 31.🔌 Which part of a screwdriver should an electrician hold? (a) the bare end (b) the steel shaft (c) the plastic handle (d) the metal tip
  32. 32.True or false: a paper strip is a conductor. (a) True (b) False
  33. 33.Which of these is an insulator? (a) a brass key (b) a woollen thread (c) an iron nail (d) a copper wire
  34. 34.🔦 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
  35. 35.True or false: a brass key is a conductor. (a) True (b) False
  36. 36.🔌 Is a plastic straw a conductor or an insulator? (a) an insulator (b) a conductor
  37. 37.Which of these is a conductor? (a) a cotton thread (b) a rubber band (c) a woollen thread (d) a copper wire
  38. 38.🔌 Is a copper wire a conductor or an insulator? (a) an insulator (b) a conductor
  39. 39.🔍 Which is the odd one out? (a) a steel spoon (b) a plastic ruler (c) a wooden stick (d) a ceramic cup
  40. 40.True or false: a glass marble is a conductor. (a) True (b) False

Answer key

  1. plastic is an insulator
  2. a conductor
  3. an insulator
  4. Yes
  5. a cotton thread
  6. a glass marble
  7. Yes
  8. an iron nail
  9. a conductor
  10. True
  11. True
  12. Yes
  13. conductors
  14. No
  15. a ceramic cup
  16. an insulator
  17. a steel spoon
  18. No
  19. an insulator
  20. a conductor
  21. an insulator
  22. a conductor
  23. Yes
  24. a dry cork
  25. No
  26. an insulator
  27. No
  28. Yes
  29. a graphite rod
  30. an iron nail
  31. the plastic handle
  32. False
  33. a woollen thread
  34. No
  35. True
  36. an insulator
  37. a copper wire
  38. a conductor
  39. a steel spoon
  40. False

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