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Compounds (material's) that are good conductors are the ones that have many free electrons to cause electron drift. Free electrons are ones that are not closely bound to their nucleus and can move from one atom to another. copper, aluminium, silver are among the best. insulators such as plastic, rubber or any non metallic material do not have any free electrons, thus make good insulators. Resistors are materials as iron, nickel and nichrome. some of there energy is absorbed in the electron drift.

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14y ago

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