a cyllindrical wire is stretched to increase its length by 10 percentage . calculate the percentage change in its resistance?

Asked by babita bhatt | 18th Feb, 2014, 09:57: PM

Expert Answer:

Let ρ be the resistivity of the material of the wire and R1 and R2 are the resistances of the wire in the two cases.

Initial length = l1

Initial cross-section = A1

Final length = l2

Final cross-section = A2

Answered by  | 19th Feb, 2014, 11:50: AM

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