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Electronics Worksheet: Conductors and Insulators

Electronics lesson 3: Conductors and insulators · Set 112 · 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 is the odd one out? (a) a ceramic cup (b) an iron nail (c) a safety pin (d) a graphite rod
  2. 2.True or false: a plastic straw is an insulator. (a) False (b) True
  3. 3.Which of these is an insulator? (a) a dry cork (b) a metal paper clip (c) a copper wire (d) a steel spoon
  4. 4.🔍 Which is the odd one out? (a) aluminium foil (b) a steel coin (c) a plastic ruler (d) a safety pin
  5. 5.Which of these is a conductor? (a) aluminium foil (b) a cotton thread (c) a dry cork (d) a plastic straw
  6. 6.True or false: a wooden stick is a conductor. (a) False (b) True
  7. 7.🔍 Which is the odd one out? (a) aluminium foil (b) a paper strip (c) a rubber band (d) a cotton thread
  8. 8.🔌 A gap of dry air between two wires acts as … (a) a switch that is ON (b) a cell (c) an insulator (d) a conductor
  9. 9.Which of these is a conductor? (a) a wooden stick (b) a rubber band (c) a steel spoon (d) a rubber eraser
  10. 10.🔌 Why are electric wires covered in plastic? (a) plastic is an insulator (b) plastic is a conductor (c) to make them heavy (d) plastic makes current
  11. 11.🔌 Is a rubber eraser 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.🔍 Which is the odd one out? (a) a copper wire (b) a woollen thread (c) a wooden stick (d) a ceramic cup
  14. 14.🔌 Most metals are good … (a) conductors (b) insulators (c) magnets only (d) batteries
  15. 15.Which of these is a conductor? (a) a woollen thread (b) a rubber band (c) a graphite rod (d) a plastic ruler
  16. 16.True or false: aluminium foil is an insulator. (a) False (b) True
  17. 17.🔍 Which is the odd one out? (a) a copper wire (b) a metal paper clip (c) a steel coin (d) a paper strip
  18. 18.🔌 Which part of a screwdriver should an electrician hold? (a) the steel shaft (b) the plastic handle (c) the metal tip (d) the bare end
  19. 19.🔌 Is a ceramic cup a conductor or an insulator? (a) a conductor (b) an insulator
  20. 20.🔦 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
  21. 21.True or false: a brass key is an insulator. (a) False (b) True
  22. 22.🔌 Is a paper strip a conductor or an insulator? (a) an insulator (b) a conductor
  23. 23.🔌 Is a metal paper clip 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 steel spoon across the gap. Does the bulb glow? (a) No (b) Yes
  25. 25.True or false: a copper wire is an insulator. (a) False (b) True
  26. 26.🔌 Is a plastic straw a conductor or an insulator? (a) a conductor (b) an insulator
  27. 27.🔦 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
  28. 28.🔍 Which is the odd one out? (a) a rubber band (b) a paper strip (c) a ceramic cup (d) a steel spoon
  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 metal paper clip (b) a rubber eraser (c) a plastic ruler (d) a dry cork
  31. 31.Which of these is an insulator? (a) a steel coin (b) a plastic ruler (c) a copper wire (d) a steel spoon
  32. 32.True or false: a glass marble is an insulator. (a) False (b) True
  33. 33.True or false: a glass marble is a conductor. (a) False (b) True
  34. 34.🔌 Is a safety pin a conductor or an insulator? (a) a conductor (b) an insulator
  35. 35.True or false: a paper strip is an insulator. (a) False (b) True
  36. 36.🔦 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
  37. 37.True or false: aluminium foil is a conductor. (a) True (b) False
  38. 38.🔌 Is a graphite rod a conductor or an insulator? (a) an insulator (b) a conductor
  39. 39.True or false: a copper wire is a conductor. (a) False (b) True
  40. 40.🔦 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) No (b) Yes

Answer key

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

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