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OpenStudy (kmullis6):
Electrical wiring is commonly composed of metal covered in plastic or rubber coating. Which of these materials is an insulator and which is a conductor?
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OpenStudy (anonymous):
@kmullis6 Well, look at something you know: a power cord. What portion of the cord gets plugged into the wall? A metal portion or a rubber (or plastic) portion of the cord.
OpenStudy (kmullis6):
Metal is the conductor. Plastic or rubber coating is the insulator. Right? @mrdoldum
OpenStudy (anonymous):
@kmullis6 Yep.
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