Question
Download Solution PDFIf a current of 18.2 Ampere per second flows through a copper conductor and the average collision time of electrons is 0.25 μs, then the value of conductivity of the copper conductor is ______.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFGiven:
\(\tau\text { collision time }=0.25\mu s=0.25\times10^{-6}s\)
\(ne=18.2\ A/sec\)
Concept:
Electrical Conductivity is given as
- \(\sigma=\frac{ne^2\tau}{m}\)
where e is electronic charge \(e=1.6\times10^{-19}C\), m is mass of electron \(m=9.1\times10^{-31}kg\)
Explanation:
Substitute all given values we get,
- \(\sigma=\frac{ne^2\tau}{m}=\frac{18.2\times1.6\times10^{-19}\times0.25\times10^{-6}}{9.1\times10^{-31}}\)
- \(\sigma=0.80\times10^6mho/m\)
Hence, the correct answer is Option-1-\(\sigma=0.80\times10^6mho/m\).
Last updated on Jul 9, 2025
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