← Conductors and insulators lesson New set →

Electronics Worksheet: Conductors and Insulators

Electronics lesson 3: Conductors and insulators · Set 96 · 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.

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

Answer key

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

Free electronics lessons, practice and worksheets at talentjr.in/electronics-for-kids