Question

Wire stretched with x percent and new reistance is

Answer 1

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Hey mate!

If the length of wire is very small (less or equal to 5%)

Then,

∆R/R×100 =2(∆L/L×100)

If changes are more then 5%then..

Use formula..

FinalR-initialR/initial R ×100

Hope it will help you..

#phoenix