If a 0.1% length is increased due to stretching, then the percentage increase in its resistance will be ??
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• R = P I/V for given wire, volume V = AI → A= V/I
→ .°. R = P I²/V
.°. % increase in R is 2%
→ .°. R = P I²/V
.°. % increase in R is 2%
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