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Electronics Worksheet: Conductors and Insulators

Electronics lesson 3: Conductors and insulators · Set 83 · 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 wooden stick across the gap. Does the bulb glow? (a) No (b) Yes
  2. 2.🔍 Which is the odd one out? (a) a dry cork (b) an iron nail (c) a plastic straw (d) a paper strip
  3. 3.🔌 Why are electric wires covered in plastic? (a) to make them heavy (b) plastic is an insulator (c) plastic makes current (d) plastic is a conductor
  4. 4.Which of these is an insulator? (a) a copper wire (b) a metal paper clip (c) aluminium foil (d) a rubber band
  5. 5.🔍 Which is the odd one out? (a) a safety pin (b) a rubber band (c) a steel coin (d) a copper wire
  6. 6.🔌 A gap of dry air between two wires acts as … (a) a conductor (b) a switch that is ON (c) a cell (d) an insulator
  7. 7.🔌 Is a rubber band a conductor or an insulator? (a) an insulator (b) a conductor
  8. 8.Which of these is a conductor? (a) a steel spoon (b) a rubber band (c) a ceramic cup (d) a cotton thread
  9. 9.🔌 Is a brass key a conductor or an insulator? (a) an insulator (b) a conductor
  10. 10.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a graphite rod across the gap. Does the bulb glow? (a) No (b) Yes
  11. 11.🔌 Most metals are good … (a) conductors (b) magnets only (c) batteries (d) insulators
  12. 12.True or false: an iron nail is a conductor. (a) True (b) False
  13. 13.🔌 Is a woollen thread a conductor or an insulator? (a) a conductor (b) an insulator
  14. 14.🔦 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
  15. 15.🔍 Which is the odd one out? (a) a dry cork (b) a metal paper clip (c) a paper strip (d) a cotton thread
  16. 16.🔍 Which is the odd one out? (a) a cotton thread (b) a glass marble (c) a plastic ruler (d) a copper wire
  17. 17.🔍 Which is the odd one out? (a) an iron nail (b) a brass key (c) a safety pin (d) a ceramic cup
  18. 18.True or false: aluminium foil is an insulator. (a) False (b) True
  19. 19.Which of these is a conductor? (a) a glass marble (b) a dry cork (c) a brass key (d) a woollen thread
  20. 20.True or false: a copper wire is an insulator. (a) False (b) True
  21. 21.Which of these is an insulator? (a) a copper wire (b) aluminium foil (c) a ceramic cup (d) a metal paper clip
  22. 22.Which of these is an insulator? (a) a graphite rod (b) a woollen thread (c) an iron nail (d) a safety pin
  23. 23.🔍 Which is the odd one out? (a) a paper strip (b) a brass key (c) a metal paper clip (d) a safety pin
  24. 24.Which of these is a conductor? (a) a woollen thread (b) a ceramic cup (c) a steel coin (d) a glass marble
  25. 25.🔦 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
  26. 26.🔦 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
  27. 27.🔍 Which is the odd one out? (a) a wooden stick (b) a brass key (c) an iron nail (d) aluminium foil
  28. 28.True or false: a steel spoon is an insulator. (a) True (b) False
  29. 29.🔌 Which part of a screwdriver should an electrician hold? (a) the steel shaft (b) the plastic handle (c) the bare end (d) the metal tip
  30. 30.🔍 Which is the odd one out? (a) a metal paper clip (b) a brass key (c) a steel coin (d) a plastic ruler
  31. 31.🔌 Is a cotton thread a conductor or an insulator? (a) an insulator (b) a conductor
  32. 32.True or false: a steel spoon is a conductor. (a) True (b) False
  33. 33.🔦 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) Yes (b) No
  34. 34.Which of these is a conductor? (a) a woollen thread (b) a paper strip (c) a dry cork (d) a safety pin
  35. 35.🔌 Is a safety pin a conductor or an insulator? (a) an insulator (b) a conductor
  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.True or false: a brass key is an insulator. (a) True (b) False
  38. 38.🔦 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
  39. 39.Which of these is an insulator? (a) aluminium foil (b) a metal paper clip (c) a rubber eraser (d) an iron nail
  40. 40.🔦 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) Yes (b) No

Answer key

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

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