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Conductor or insulator?

Exercise and reference answers

Items
  1. Item
    Allows charge to move through it
    Category
    Conductor
  2. Item
    A metal, where electrons are mobile
    Category
    Conductor
  3. Item
    An electrolyte, where ions are mobile
    Category
    Conductor
  4. Item
    Does not allow charge to move through it
    Category
    Insulator
  5. Item
    Charge stays where it is put
    Category
    Insulator
Categories
  1. Item
    Conductor
  2. Item
    Insulator

Explanation

Conductors let charge move through them; insulators do not. In metals the mobile charges are electrons, in electrolytes both kinds of ion move. Source: syllabus Physics Part I, Ch 1 Electric Charges and Fields.
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