Insulator
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Example:
Imagine trying to carry a conversation in a crowded, noisy room where everyone is talking at once. Just as it's difficult for your words to travel clearly through all the noise, electricity finds it challenging to move through an insulator. In this analogy, the noise represents the insulating material, which blocks and scatters the path of electricity (your words), making it hard for it to pass through easily.
Practice Version
Insulator: A material that does not let electricity pass through easily. Insulator. An insulator is a substance that blocks or slows down the flow of electrical current.