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

Question

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

​

in progress 0
Khánh Gia 4 years 2021-07-17T15:38:05+00:00 1 Answers 19 views 0

Answers ( )

  1. Tryphena
    0
    2021-07-17T15:39:52+00:00
    Reply

    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.

Leave an answer

Browse

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