CUET and UG exam CUET UG 2025 Mock Test Series Physics Current, Resistance and Electricity Current Density
When \(5V\) potential difference is applied across a wire length \(0.1\ m\), the drift speed of electron is 2.5 \(\times 10^{-4} \ ms^{-1}\). If the electron density in the wire is 8 \(\times 10^{28} \ m^{-3}\), the resistivity of the material is close to
1
\(1.6\times 10^{-8}\ \Omega m\)
2
\(1.6\times 10^{-7}\ \Omega m\)
3
\(1.6\times 10^{-6}\ \Omega m\)
4
\(1.6\times 10^{-5}\ \Omega m\)