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(C) The drift speed $v_{d}$ is given by the formula $i = neAv_{d}$,where $n$ is the number density of free electrons.First,calculate the number densit

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(C) The drift speed $v_{d}$ is given by the formula $i = neAv_{d}$,where $n$ is the number density of free electrons.First,calculate the number density $n$:$n = \frac{	ext{Density} 	imes N_{A}}{	ext{Molar Mass}} = \frac{2.7 	imes 10^{3} \, kg/m^{3} 	imes 6.022 	imes 10^{23} \, mol^{-1}}{27 	imes 10^{-3} \, kg/mol} \approx 6.022 	imes 10^{28} \, m^{-3}$.Using $n \approx 6 	imes 10^{28} \, m^{-3}$ for simplicity.Now,rearrange the current formula for $v_{d}$:$v_{d} = \frac{i}{neA}$.Substitute the given values:$i = 10 \, A$,$n = 6 	imes 10^{28} \, m^{-3}$,$e = 1.6 	imes 10^{-19} \, C$,$A = 4 	imes 10^{-6} \, m^{2}$.$v_{d} = \frac{10}{(6 	imes 10^{28}) 	imes (1.6 	imes 10^{-19}) 	imes (4 	imes 10^{-6})}$$v_{d} = \frac{10}{38.4 	imes 10^{3}} = \frac{10}{38400} \approx 2.6 	imes 10^{-4} \, m/s$.

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