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9. Some materials are classified as poor conductors of electricity. They allow electri
to pass under certain conditions. Explain with the help of an example.
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Explanation:
Materials that are poor conductors of electricity are called insulators. Some examples are solid ionic compounds, non-metal elements, glass and plastics that are polymers of hydrocarbons.
The reason these substances don't conduct electricity is that charges can't move through them. The particles and their electrons are locked into a solid structure.
When ionic compounds are melted or dissolved in water they become conductive because the ions are free to move around, allowing charge to be transferred.
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