The following table gives the resistivity of three samples A) 1.6*10-8 B) 5.1*10-8 C) 10.6*10-10 D) 2.30*10-17 which sample is used in electrical heating devices & why ?
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Explanation:
A material having low resistivity is a good conductor. Since, resistivity of sample A is the least among all other materials, so sample A is a good conductor. A material having high value of resistivity is an insulator. Therefore, sample C is an insulator.
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