Physics - Current Electricity Question with Solution | TestHub

Drift speed of electrons, when $1.5\text{A}$ current flows in a copper wire of cross section $5m{m}^2$ is $v_d.$ If the electron density in copper is $9\times 10^{28}{m}^{-3}$ the value of $v_d$ in $mm{\text{s}}^{-1}$ is close to (Take charge of an electron to be $=1.6\times 10^{-19}\mathrm{C}$)