A) \[2.9\times {{10}^{-3}}{{\Omega }^{-1}}c{{m}^{-1}}\]
B) \[1.8\times {{10}^{-2}}{{\Omega }^{-1}}c{{m}^{-1}}\]
C) \[2.4\times {{10}^{-4}}{{\Omega }^{-1}}c{{m}^{-1}}\]
D) \[3.6\times {{10}^{-3}}{{\Omega }^{-1}}c{{m}^{-1}}\]
Correct Answer: A
Solution :
\[=\frac{10}{100}\times 6+\frac{10}{100}\times 4\] \[=0.6+0.4=1\] \[\frac{\Delta R}{R}=\frac{1}{10}\]
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