What is Insulator? Definition, Meaning & Example
A material that prevents or slows the flow of electric current or heat due to lack of free electrons.
TL;DR: A material that prevents or slows the flow of electric current or heat due to lack of free electrons.
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Insulator: A material that prevents or slows the flow of electric current or heat due to lack of free electrons.
Explanation
Insulators have electrons tightly bound to atoms, preventing easy movement. Non-metals like rubber and plastic are good insulators. They are used to protect from electrical shock.
Example
The rubber coating on electrical cords is an insulator that protects people from electric shock.
Frequently Asked Questions
Is glass a good insulator?
Yes, glass is an excellent electrical insulator and is also a good thermal insulator.
Why do insulators not conduct electricity?
Electrons in insulators are tightly bound to atoms and cannot move freely to carry electric current.
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