← Conductors and insulators lesson New set →

Electronics Worksheet: Conductors and Insulators

Electronics lesson 3: Conductors and insulators · Set 106 · 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.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a plastic straw across the gap. Does the bulb glow? (a) Yes (b) No
  2. 2.🔌 Is a safety pin a conductor or an insulator? (a) an insulator (b) a conductor
  3. 3.True or false: aluminium foil is an insulator. (a) True (b) False
  4. 4.🔍 Which is the odd one out? (a) a copper wire (b) a metal paper clip (c) a cotton thread (d) an iron nail
  5. 5.🔌 Most metals are good … (a) batteries (b) insulators (c) magnets only (d) conductors
  6. 6.🔌 A gap of dry air between two wires acts as … (a) a cell (b) a switch that is ON (c) an insulator (d) a conductor
  7. 7.🔍 Which is the odd one out? (a) a wooden stick (b) a metal paper clip (c) a graphite rod (d) a copper wire
  8. 8.🔦 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
  9. 9.🔌 Is a ceramic cup a conductor or an insulator? (a) a conductor (b) an insulator
  10. 10.🔍 Which is the odd one out? (a) a glass marble (b) a woollen thread (c) a wooden stick (d) an iron nail
  11. 11.Which of these is a conductor? (a) a woollen thread (b) a glass marble (c) aluminium foil (d) a dry cork
  12. 12.Which of these is an insulator? (a) a rubber eraser (b) a graphite rod (c) a copper wire (d) a brass key
  13. 13.Which of these is an insulator? (a) a steel coin (b) a woollen thread (c) a steel spoon (d) a safety pin
  14. 14.True or false: a paper strip is a conductor. (a) True (b) False
  15. 15.🔍 Which is the odd one out? (a) a glass marble (b) a rubber band (c) a brass key (d) a dry cork
  16. 16.Which of these is an insulator? (a) a safety pin (b) a graphite rod (c) a rubber band (d) a steel spoon
  17. 17.🔌 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
  18. 18.🔌 Is a glass marble a conductor or an insulator? (a) a conductor (b) an insulator
  19. 19.True or false: a woollen thread is an insulator. (a) False (b) True
  20. 20.🔌 Is a paper strip a conductor or an insulator? (a) a conductor (b) an insulator
  21. 21.🔌 Is an iron nail a conductor or an insulator? (a) a conductor (b) an insulator
  22. 22.🔍 Which is the odd one out? (a) a ceramic cup (b) a plastic ruler (c) a cotton thread (d) a safety pin
  23. 23.🔍 Which is the odd one out? (a) a rubber eraser (b) a paper strip (c) a steel coin (d) a ceramic cup
  24. 24.Which of these is an insulator? (a) a metal paper clip (b) a graphite rod (c) aluminium foil (d) a plastic ruler
  25. 25.🔦 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
  26. 26.🔦 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
  27. 27.🔍 Which is the odd one out? (a) a wooden stick (b) a ceramic cup (c) a graphite rod (d) a glass marble
  28. 28.🔌 Is a cotton thread a conductor or an insulator? (a) a conductor (b) an insulator
  29. 29.🔦 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
  30. 30.🔌 Is a copper wire a conductor or an insulator? (a) a conductor (b) an insulator
  31. 31.🔦 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
  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) Yes (b) No
  33. 33.True or false: a rubber band is an insulator. (a) True (b) False
  34. 34.🔌 Is a brass key a conductor or an insulator? (a) a conductor (b) an insulator
  35. 35.Which of these is a conductor? (a) a rubber band (b) a wooden stick (c) a metal paper clip (d) a plastic ruler
  36. 36.🔌 Which part of a screwdriver should an electrician hold? (a) the steel shaft (b) the bare end (c) the metal tip (d) the plastic handle
  37. 37.True or false: a glass marble is an insulator. (a) False (b) True
  38. 38.🔌 Is a wooden stick a conductor or an insulator? (a) a conductor (b) an insulator
  39. 39.True or false: an iron nail is an insulator. (a) True (b) False
  40. 40.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a woollen thread across the gap. Does the bulb glow? (a) No (b) Yes

Answer key

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

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