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Electronics Worksheet: Conductors and Insulators

Electronics lesson 3: Conductors and insulators · Set 75 · 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.🔦 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) Yes (b) No
  2. 2.🔍 Which is the odd one out? (a) a glass marble (b) a woollen thread (c) a steel coin (d) a plastic ruler
  3. 3.Which of these is a conductor? (a) a paper strip (b) a wooden stick (c) a ceramic cup (d) a copper wire
  4. 4.🔦 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) Yes (b) No
  5. 5.🔍 Which is the odd one out? (a) a cotton thread (b) a wooden stick (c) a brass key (d) a plastic straw
  6. 6.🔌 Is a plastic straw a conductor or an insulator? (a) an insulator (b) a conductor
  7. 7.True or false: a safety pin is an insulator. (a) False (b) True
  8. 8.🔌 Is a steel spoon a conductor or an insulator? (a) an insulator (b) a conductor
  9. 9.🔦 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) No (b) Yes
  10. 10.🔍 Which is the odd one out? (a) a safety pin (b) a metal paper clip (c) a ceramic cup (d) a steel spoon
  11. 11.Which of these is an insulator? (a) a steel spoon (b) a steel coin (c) a plastic ruler (d) a safety pin
  12. 12.True or false: a rubber band is a conductor. (a) True (b) False
  13. 13.🔌 Most metals are good … (a) insulators (b) batteries (c) conductors (d) magnets only
  14. 14.🔌 Which metal is used for most electric wires at home? (a) glass (b) rubber (c) plastic (d) copper
  15. 15.True or false: a steel spoon is a conductor. (a) False (b) True
  16. 16.🔦 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) 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 wooden stick across the gap. Does the bulb glow? (a) Yes (b) No
  18. 18.True or false: an iron nail is an insulator. (a) True (b) False
  19. 19.True or false: a paper strip is a conductor. (a) True (b) False
  20. 20.🔦 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) Yes (b) No
  21. 21.Which of these is a conductor? (a) a woollen thread (b) a wooden stick (c) a plastic ruler (d) a metal paper clip
  22. 22.Which of these is a conductor? (a) a ceramic cup (b) a paper strip (c) a dry cork (d) a brass key
  23. 23.True or false: a brass key is a conductor. (a) True (b) False
  24. 24.🔌 Is a ceramic cup a conductor or an insulator? (a) an insulator (b) a conductor
  25. 25.Which of these is an insulator? (a) a dry cork (b) aluminium foil (c) an iron nail (d) a steel spoon
  26. 26.🔌 A gap of dry air between two wires acts as … (a) a switch that is ON (b) an insulator (c) a cell (d) a conductor
  27. 27.🔌 Is an iron nail a conductor or an insulator? (a) an insulator (b) a conductor
  28. 28.🔍 Which is the odd one out? (a) a cotton thread (b) a rubber band (c) a safety pin (d) a rubber eraser
  29. 29.🔦 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
  30. 30.🔌 Is a metal paper clip a conductor or an insulator? (a) an insulator (b) a conductor
  31. 31.🔌 Why are electric wires covered in plastic? (a) to make them heavy (b) plastic is an insulator (c) plastic is a conductor (d) plastic makes current
  32. 32.True or false: a plastic straw is an insulator. (a) True (b) False
  33. 33.🔌 Is a glass marble a conductor or an insulator? (a) an insulator (b) a conductor
  34. 34.🔍 Which is the odd one out? (a) a wooden stick (b) a metal paper clip (c) a graphite rod (d) an iron nail
  35. 35.🔌 Is a paper strip a conductor or an insulator? (a) an insulator (b) a conductor
  36. 36.🔍 Which is the odd one out? (a) aluminium foil (b) a cotton thread (c) a rubber band (d) a dry cork
  37. 37.True or false: a woollen thread is a conductor. (a) False (b) True
  38. 38.Which of these is a conductor? (a) a glass marble (b) a rubber band (c) a plastic straw (d) a steel coin
  39. 39.True or false: aluminium foil is a conductor. (a) False (b) True
  40. 40.True or false: a steel coin is a conductor. (a) True (b) False

Answer key

  1. Yes
  2. a steel coin
  3. a copper wire
  4. Yes
  5. a brass key
  6. an insulator
  7. False
  8. a conductor
  9. No
  10. a ceramic cup
  11. a plastic ruler
  12. False
  13. conductors
  14. copper
  15. True
  16. Yes
  17. No
  18. False
  19. False
  20. Yes
  21. a metal paper clip
  22. a brass key
  23. True
  24. an insulator
  25. a dry cork
  26. an insulator
  27. a conductor
  28. a safety pin
  29. Yes
  30. a conductor
  31. plastic is an insulator
  32. True
  33. an insulator
  34. a wooden stick
  35. an insulator
  36. aluminium foil
  37. False
  38. a steel coin
  39. True
  40. True

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