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प्रश्न
Which of the following is a set of good conductors of electricity?
विकल्प
Amber, mica, porcelain
Rubber, glass, plastic
Copper, silver, aluminium
Silk, wool, ebonite
MCQ
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उत्तर
Copper, silver, and aluminium are classic conductors because they contain abundant free electrons. Rubber, glass, and plastic are insulators, while silk, wool, ebonite, and amber are commonly used in friction charging as non-conductors.
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