Physics
What are conductors and insulators of electricity? Give two examples of each.
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Answer
Conductors — The substances which allow the current to flow through them easily are called conductors. They have large number of free electrons and they offer a very small resistance to the flow of current.
Examples — impure water (or acidulated water) and mercury are conductors of electricity.
Insulators — The substances which do not allow current to flow through them are called insulators. They have almost no electrons and offer a very high resistance to the flow of current.
Example — cotton, rubber.
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