Answer :
Answer:
Drift velocity in m/s is [tex]1.84 \times 10^{-8}\ m/s[/tex].
Explanation:
Formula for Drift Velocity is:
[tex]u = \dfrac{I}{nAq}[/tex]
Where I is the current
n is the number of electrons in 1 [tex]m^3[/tex] or the electron density
A is the area of cross section and
q is the charge of one electron.
We are given the following:
n = [tex]8.49 \times 10^{28}\ electrons/m^3[/tex]
I = 1 A
A = 0.40 [tex]cm^2[/tex] = 40 [tex]\times 10^{-4}[/tex] [tex]m^{2}[/tex]
We know that q = [tex]1.6\times10^{-19} C[/tex]
Putting all the values to find drift velocity:
[tex]u = \dfrac{1}{8.49 \times 10 ^{28} \times 40 \times 10^{-4}\times 1.6 \times 10^{-19}}\\u = \dfrac{1}{543.36 \times 10 ^{5} }\\u = 1.84 \times 10^{-8}\ m/s[/tex]
So, drift velocity in m/s is [tex]1.84 \times 10^{-8}\ m/s[/tex].