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Electronics Worksheet: Conductors and Insulators

Electronics lesson 3: Conductors and insulators · Set 64 · 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 of these is a conductor? (a) a rubber band (b) a cotton thread (c) a dry cork (d) a safety pin
  2. 2.🔦 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
  3. 3.🔌 Is a dry cork a conductor or an insulator? (a) a conductor (b) an insulator
  4. 4.True or false: a copper wire is a conductor. (a) False (b) True
  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) No (b) Yes
  6. 6.Which of these is a conductor? (a) a rubber eraser (b) a glass marble (c) a woollen thread (d) a brass key
  7. 7.🔦 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) Yes (b) No
  8. 8.🔍 Which is the odd one out? (a) a paper strip (b) a safety pin (c) a brass key (d) a copper wire
  9. 9.🔌 Is a plastic straw a conductor or an insulator? (a) a conductor (b) an insulator
  10. 10.Which of these is an insulator? (a) a brass key (b) aluminium foil (c) an iron nail (d) a dry cork
  11. 11.🔌 Is a brass key a conductor or an insulator? (a) an insulator (b) a conductor
  12. 12.🔌 Most metals are good … (a) batteries (b) magnets only (c) conductors (d) insulators
  13. 13.🔌 Why are electric wires covered in plastic? (a) to make them heavy (b) plastic makes current (c) plastic is an insulator (d) plastic is a conductor
  14. 14.🔌 Is a metal paper clip a conductor or an insulator? (a) an insulator (b) a conductor
  15. 15.🔌 A gap of dry air between two wires acts as … (a) a switch that is ON (b) a cell (c) a conductor (d) an insulator
  16. 16.🔍 Which is the odd one out? (a) a metal paper clip (b) a graphite rod (c) aluminium foil (d) a cotton thread
  17. 17.Which of these is an insulator? (a) a safety pin (b) a steel coin (c) an iron nail (d) a plastic straw
  18. 18.True or false: a metal paper clip is a conductor. (a) True (b) False
  19. 19.🔍 Which is the odd one out? (a) an iron nail (b) a steel spoon (c) a ceramic cup (d) a metal paper clip
  20. 20.Which of these is a conductor? (a) a dry cork (b) a ceramic cup (c) a steel spoon (d) a plastic ruler
  21. 21.True or false: a plastic straw is an insulator. (a) False (b) True
  22. 22.Which of these is a conductor? (a) a ceramic cup (b) a plastic ruler (c) a glass marble (d) a graphite rod
  23. 23.🔍 Which is the odd one out? (a) a dry cork (b) a plastic straw (c) a woollen thread (d) a copper wire
  24. 24.🔌 Is a rubber band a conductor or an insulator? (a) an insulator (b) a conductor
  25. 25.True or false: a graphite rod is a conductor. (a) False (b) True
  26. 26.🔦 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) No (b) Yes
  27. 27.True or false: a rubber eraser is an insulator. (a) True (b) False
  28. 28.🔌 Is a plastic ruler a conductor or an insulator? (a) an insulator (b) a conductor
  29. 29.🔌 Is a glass marble a conductor or an insulator? (a) an insulator (b) a conductor
  30. 30.🔍 Which is the odd one out? (a) a steel coin (b) a wooden stick (c) an iron nail (d) aluminium foil
  31. 31.Which of these is a conductor? (a) a rubber band (b) a copper wire (c) a glass marble (d) a paper strip
  32. 32.🔌 Which part of a screwdriver should an electrician hold? (a) the metal tip (b) the steel shaft (c) the bare end (d) the plastic handle
  33. 33.🔌 Is a safety pin a conductor or an insulator? (a) an insulator (b) a conductor
  34. 34.🔦 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
  35. 35.🔍 Which is the odd one out? (a) a rubber band (b) a woollen thread (c) a wooden stick (d) a metal paper clip
  36. 36.🔦 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
  37. 37.🔌 Is an iron nail a conductor or an insulator? (a) an insulator (b) a conductor
  38. 38.🔦 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
  39. 39.🔦 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
  40. 40.🔍 Which is the odd one out? (a) a plastic straw (b) a copper wire (c) aluminium foil (d) a graphite rod

Answer key

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

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