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Electronics Worksheet: Conductors and Insulators

Electronics lesson 3: Conductors and insulators · Set 111 · 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 paper strip across the gap. Does the bulb glow? (a) Yes (b) No
  2. 2.True or false: a ceramic cup is a conductor. (a) True (b) False
  3. 3.🔦 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) Yes (b) No
  4. 4.🔦 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
  5. 5.🔦 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
  6. 6.🔌 Is a plastic ruler a conductor or an insulator? (a) an insulator (b) a conductor
  7. 7.🔌 Which part of a screwdriver should an electrician hold? (a) the metal tip (b) the bare end (c) the plastic handle (d) the steel shaft
  8. 8.🔌 Is a rubber band a conductor or an insulator? (a) a conductor (b) an insulator
  9. 9.Which of these is an insulator? (a) a metal paper clip (b) a ceramic cup (c) a safety pin (d) a copper wire
  10. 10.True or false: aluminium foil is an insulator. (a) True (b) False
  11. 11.🔌 Is a rubber eraser a conductor or an insulator? (a) a conductor (b) an insulator
  12. 12.Which of these is a conductor? (a) a plastic ruler (b) a dry cork (c) a brass key (d) a wooden stick
  13. 13.Which of these is an insulator? (a) a rubber eraser (b) a copper wire (c) a graphite rod (d) aluminium foil
  14. 14.🔌 Is a safety pin a conductor or an insulator? (a) an insulator (b) a conductor
  15. 15.🔍 Which is the odd one out? (a) a ceramic cup (b) a glass marble (c) a graphite rod (d) a plastic ruler
  16. 16.🔦 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
  17. 17.Which of these is an insulator? (a) a paper strip (b) a brass key (c) a steel coin (d) a safety pin
  18. 18.🔌 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
  19. 19.🔌 Is a glass marble a conductor or an insulator? (a) a conductor (b) an insulator
  20. 20.True or false: a copper wire is a conductor. (a) True (b) False
  21. 21.🔍 Which is the odd one out? (a) a ceramic cup (b) a plastic ruler (c) a glass marble (d) a steel spoon
  22. 22.🔍 Which is the odd one out? (a) a copper wire (b) an iron nail (c) a steel spoon (d) a wooden stick
  23. 23.🔦 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
  24. 24.🔌 A gap of dry air between two wires acts as … (a) a cell (b) a conductor (c) an insulator (d) a switch that is ON
  25. 25.🔌 Is a metal paper clip a conductor or an insulator? (a) an insulator (b) a conductor
  26. 26.True or false: a cotton thread is a conductor. (a) False (b) True
  27. 27.True or false: a brass key is an insulator. (a) True (b) False
  28. 28.🔍 Which is the odd one out? (a) a woollen thread (b) a wooden stick (c) a ceramic cup (d) a safety pin
  29. 29.True or false: a metal paper clip is a conductor. (a) True (b) False
  30. 30.🔌 Is a cotton thread a conductor or an insulator? (a) a conductor (b) an insulator
  31. 31.🔍 Which is the odd one out? (a) a cotton thread (b) a glass marble (c) a paper strip (d) aluminium foil
  32. 32.🔍 Which is the odd one out? (a) a paper strip (b) a plastic straw (c) an iron nail (d) a dry cork
  33. 33.🔌 Is a woollen thread a conductor or an insulator? (a) a conductor (b) an insulator
  34. 34.🔌 Is a wooden stick a conductor or an insulator? (a) a conductor (b) an insulator
  35. 35.🔍 Which is the odd one out? (a) a dry cork (b) a copper wire (c) a graphite rod (d) a steel spoon
  36. 36.🔦 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) No (b) Yes
  37. 37.🔦 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
  38. 38.Which of these is an insulator? (a) a plastic ruler (b) a steel coin (c) aluminium foil (d) a safety pin
  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) Yes (b) No
  40. 40.True or false: a paper strip is a conductor. (a) False (b) True

Answer key

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

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