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Answers posted by jesanivar

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A cylindrical metallic wire is stretched to increase its length by $5\%$. Calculate the percentage change resistance.
answered Jul 9, 2019
It is given l'=l + 5% of l =l +5/100 l = l(1+5/100) Therefore A'=A/(1+5/100) R'=pl'/A' =[pl×(1+5/100
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