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Sort each material by its resistivity

Exercise and reference answers

Items
  1. Item
    Copper
    Category
    Conductor
  2. Item
    Resistivity near 10⁻⁸ Ω m
    Category
    Conductor
  3. Item
    Silicon
    Category
    Semiconductor
  4. Item
    Germanium
    Category
    Semiconductor
  5. Item
    Glass
    Category
    Insulator
  6. Item
    Rubber
    Category
    Insulator
Categories
  1. Item
    Conductor
  2. Item
    Semiconductor
  3. Item
    Insulator

Explanation

Your syllabus gives metals 10⁻⁸ to 10⁻⁶ Ω m, insulators 10²² to 10²⁴ times greater, and semiconductors in the middle on a logarithmic scale. Source: syllabus Physics Part I, Ch 3 Current Electricity.
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