Current Electricity

The number density of free electrons in copper is nearly \(8 \times 10^{28} \mathrm{~m}^{-3}\). A copper wire has its area of cross section \(=2 \times 10^{-6} \mathrm{~m}^{2}\) and is carrying a current of \(3.2 \mathrm{~A}\). The drift speed of the electrons is ___________ \(\times 10^{-6} \mathrm{ms}^{-1}\)