a wire is stretched to double its length .what happened to its resistance and resistivity? ​

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a wire is stretched to double its length .what happened to its resistance and resistivity?

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Khánh Gia 7 months 2021-07-17T15:38:05+00:00 1 Answers 7 views 0

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    2021-07-17T15:39:52+00:00

    Resistivity of wire remains constant. As the length of wire gets doubled, the cross-sectional area will become half of its previous value because volume of wire remains constant. Hence, we can see that the new resistance is four times the previous resistance.

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Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )