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Electronics Worksheet: Conductors and Insulators

Electronics lesson 3: Conductors and insulators · Set 67 · 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 wooden stick across the gap. Does the bulb glow? (a) No (b) Yes
  2. 2.True or false: aluminium foil is an insulator. (a) True (b) False
  3. 3.🔌 Is a steel spoon a conductor or an insulator? (a) a conductor (b) an insulator
  4. 4.🔦 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
  5. 5.🔍 Which is the odd one out? (a) a plastic ruler (b) a woollen thread (c) a brass key (d) a cotton thread
  6. 6.Which of these is a conductor? (a) a plastic ruler (b) a dry cork (c) a copper wire (d) a plastic straw
  7. 7.🔌 Is a glass marble a conductor or an insulator? (a) a conductor (b) an insulator
  8. 8.🔌 Most metals are good … (a) batteries (b) insulators (c) conductors (d) magnets only
  9. 9.🔍 Which is the odd one out? (a) a cotton thread (b) aluminium foil (c) a woollen thread (d) a plastic straw
  10. 10.🔌 Why are electric wires covered in plastic? (a) to make them heavy (b) plastic is a conductor (c) plastic makes current (d) plastic is an insulator
  11. 11.Which of these is a conductor? (a) a graphite rod (b) a plastic straw (c) a glass marble (d) a woollen thread
  12. 12.🔌 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
  13. 13.🔍 Which is the odd one out? (a) a copper wire (b) a plastic ruler (c) a rubber band (d) a plastic straw
  14. 14.Which of these is an insulator? (a) aluminium foil (b) a copper wire (c) a plastic straw (d) a steel spoon
  15. 15.🔌 A gap of dry air between two wires acts as … (a) a conductor (b) a cell (c) an insulator (d) a switch that is ON
  16. 16.🔌 Is a steel coin a conductor or an insulator? (a) an insulator (b) a conductor
  17. 17.🔌 Is a brass key a conductor or an insulator? (a) a conductor (b) an insulator
  18. 18.🔌 Is an iron nail a conductor or an insulator? (a) a conductor (b) an insulator
  19. 19.🔍 Which is the odd one out? (a) a plastic ruler (b) a woollen thread (c) a steel coin (d) a cotton thread
  20. 20.🔌 Is a copper wire a conductor or an insulator? (a) a conductor (b) an insulator
  21. 21.True or false: an iron nail is an insulator. (a) True (b) False
  22. 22.🔌 Is a safety pin 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 steel spoon across the gap. Does the bulb glow? (a) No (b) Yes
  24. 24.🔦 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) Yes (b) No
  25. 25.Which of these is an insulator? (a) a graphite rod (b) a brass key (c) a steel spoon (d) a rubber band
  26. 26.🔦 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
  27. 27.🔌 Is a rubber eraser a conductor or an insulator? (a) an insulator (b) a conductor
  28. 28.🔍 Which is the odd one out? (a) a safety pin (b) a copper wire (c) an iron nail (d) a wooden stick
  29. 29.Which of these is a conductor? (a) a dry cork (b) a rubber band (c) a steel spoon (d) a paper strip
  30. 30.Which of these is an insulator? (a) a copper wire (b) a safety pin (c) a rubber eraser (d) a steel spoon
  31. 31.True or false: a brass key is an insulator. (a) False (b) True
  32. 32.🔍 Which is the odd one out? (a) a plastic straw (b) a paper strip (c) a wooden stick (d) a metal paper clip
  33. 33.🔦 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
  34. 34.🔍 Which is the odd one out? (a) an iron nail (b) a safety pin (c) aluminium foil (d) a cotton thread
  35. 35.Which of these is a conductor? (a) a steel coin (b) a dry cork (c) a plastic straw (d) a cotton thread
  36. 36.🔌 Is aluminium foil a conductor or an insulator? (a) a conductor (b) an insulator
  37. 37.🔍 Which is the odd one out? (a) aluminium foil (b) a steel spoon (c) a metal paper clip (d) a dry cork
  38. 38.🔌 Which metal is used for most electric wires at home? (a) plastic (b) rubber (c) glass (d) copper
  39. 39.🔦 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
  40. 40.🔌 Is a plastic ruler a conductor or an insulator? (a) an insulator (b) a conductor

Answer key

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

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