Kcet
Current Electricity
KCET 2021
MCQ+1 / -02021
A copper wire of length \(1 \mathrm{~m}\) and uniform cross-sectional area \(5 \times 10^{-7} \mathrm{~m}^2\) carries a current of \(1 \mathrm{~A}\). Assuming that, there are \(8 \times 10^{28}\) free electrons per \(\mathrm{m}^3\) in copper, how long will an electron take to drift from one end of the wire to the other?
