At what temperature would the resistance of a copper

Asked by admin @ 17/08/2021 in Physics viewed by 302 People

At what temperature would tje resistence of a copper conductor be double its resistence at 0c (given alpha for copper = 3.9 ×10^-3

Answered by admin @ 17/08/2021

From the resistance variation with temperature equation , we know

R = R₀(1+αt)

where,

R = resistance at temperature t

R₀ = resistance at 0°c

From the given question R/R₀ = 2

=> 2 = 1+αt

=> αt = 1

=> t = 1/α = 1/3.9 x10⁻³ = 256° C

Hence the temp at which the resistance of copper will become double its resistance at 0°c is 256°C

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