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Electronics Worksheet: Conductors and Insulators

Electronics lesson 3: Conductors and insulators · Set 98 · 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 steel coin across the gap. Does the bulb glow? (a) Yes (b) No
  2. 2.🔌 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
  3. 3.🔌 Is a brass key a conductor or an insulator? (a) a conductor (b) an insulator
  4. 4.🔌 Is a ceramic cup a conductor or an insulator? (a) an insulator (b) a conductor
  5. 5.Which of these is a conductor? (a) a ceramic cup (b) a woollen thread (c) a cotton thread (d) a steel spoon
  6. 6.🔌 Is a plastic straw a conductor or an insulator? (a) an insulator (b) a conductor
  7. 7.🔍 Which is the odd one out? (a) a woollen thread (b) a plastic straw (c) a ceramic cup (d) a safety pin
  8. 8.🔌 Is a woollen thread a conductor or an insulator? (a) a conductor (b) an insulator
  9. 9.🔌 Is a steel spoon a conductor or an insulator? (a) a conductor (b) an insulator
  10. 10.🔌 Which metal is used for most electric wires at home? (a) plastic (b) copper (c) rubber (d) glass
  11. 11.🔦 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) Yes (b) No
  12. 12.True or false: a rubber band is a conductor. (a) True (b) False
  13. 13.🔦 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
  14. 14.Which of these is an insulator? (a) a safety pin (b) a plastic ruler (c) a brass key (d) aluminium foil
  15. 15.🔦 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
  16. 16.🔌 Is a glass marble a conductor or an insulator? (a) an insulator (b) a conductor
  17. 17.🔦 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
  18. 18.True or false: a copper wire is an insulator. (a) False (b) True
  19. 19.🔍 Which is the odd one out? (a) a cotton thread (b) a graphite rod (c) a rubber band (d) a ceramic cup
  20. 20.Which of these is a conductor? (a) a paper strip (b) a cotton thread (c) a glass marble (d) a safety pin
  21. 21.🔍 Which is the odd one out? (a) a metal paper clip (b) a glass marble (c) a copper wire (d) an iron nail
  22. 22.Which of these is an insulator? (a) a copper wire (b) a graphite rod (c) a steel coin (d) a woollen thread
  23. 23.🔌 Is a safety pin a conductor or an insulator? (a) an insulator (b) a conductor
  24. 24.🔌 Is a dry cork a conductor or an insulator? (a) a conductor (b) an insulator
  25. 25.True or false: a paper strip is a conductor. (a) True (b) False
  26. 26.🔌 Is a wooden stick a conductor or an insulator? (a) an insulator (b) a conductor
  27. 27.🔌 Is an iron nail a conductor or an insulator? (a) an insulator (b) a conductor
  28. 28.🔍 Which is the odd one out? (a) a wooden stick (b) a cotton thread (c) a copper wire (d) a rubber eraser
  29. 29.🔌 Is a copper wire a conductor or an insulator? (a) a conductor (b) an insulator
  30. 30.True or false: a ceramic cup is a conductor. (a) False (b) True
  31. 31.🔌 Most metals are good … (a) batteries (b) magnets only (c) insulators (d) conductors
  32. 32.True or false: a plastic straw is an insulator. (a) True (b) False
  33. 33.🔍 Which is the odd one out? (a) a cotton thread (b) a wooden stick (c) a plastic straw (d) a brass key
  34. 34.🔌 Is a plastic ruler a conductor or an insulator? (a) a conductor (b) an insulator
  35. 35.True or false: a paper strip is an insulator. (a) True (b) False
  36. 36.🔦 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) No (b) Yes
  37. 37.🔌 Why are electric wires covered in plastic? (a) plastic makes current (b) plastic is a conductor (c) plastic is an insulator (d) to make them heavy
  38. 38.🔌 A gap of dry air between two wires acts as … (a) a conductor (b) a switch that is ON (c) an insulator (d) a cell
  39. 39.True or false: a rubber eraser is a conductor. (a) False (b) True
  40. 40.🔌 Is a graphite rod a conductor or an insulator? (a) an insulator (b) a conductor

Answer key

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

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