Physics

Problem

In a copper wire of cross-sectional area

A = 2\,\text{mm}^{2}

and electron density

n = 8.5 \times 10^{28}\,\text{m}^{-3}

, the drift velocity of electrons varies with time as shown in the graph (a rectangular pulse where

v_{d} = 0.1\,\text{mm/s}

for

10\,\text{s}

). Calculate the total charge transported through the wire in this interval. (Charge of electron

e = 1.6 \times 10^{-19}\,\text{C}

)