Editor
Drift velocity is of the order
Difficulty: Easy
A: 
$\rm{10^{-4}\,\,ms^{-1}}$
B: 
$\rm{10^{-3}\,\,ms^{-1}}$
C: 
$\rm{10^{-2}\,\,ms^{-1}}$
D: 
$\rm{10^{-1}\,\,ms^{-1}}$
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