Drift speed of electrons, when 1.5 A of current flows in a copper wire of cross section 5 mm^2, is v. If the electron density in copper is 9 × 10^28…

Drift speed of electrons, when $\displaystyle 1.5$ A of current flows in a copper wire of cross section $\displaystyle 5 \mathrm{~mm}^2$, is $\displaystyle v$. If the electron density in copper is $\displaystyle 9 \times 10^{28} / \mathrm{m}^3$ the value of $\displaystyle v$ in $\displaystyle \mathrm{mm} / \mathrm{s}$ is close to (Take charge of electron to be $\displaystyle =1.6 \times 10^{-19} \mathrm{C}$ )