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Electronics Worksheet: Conductors and Insulators

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

Answer key

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

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