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Answer:
An electrical insulator is considered a material in which electrons have a difficult time flowing through easily.
For instance, in wiring a majority of the time, the wire is coated with electrical insulators such as plastic or rubber. This helps to avoid electrical shock from the wire, as well as to maintain the electrical flow through the wire in the proper direction since it is an active electrical conductor. Common electrical insulators include paper, mica, teflon, rubber, plastic, polyvinyl chloride (PVC), glass, ceramic, porcelain, and many others.
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