Drift Velocity: a Silver Wire Has a Cross Sectional Area

Drift velocity: A silver wire has a cross sectional area A = 2.0 mm². A total of 9.4 × 10¹⁸ electrons pass through the wire in 3.0 s. The conduction electron density in silver is 5.8 × 10²⁸ electrons/m³ and e = 1.60 × 10^-19 C. What is the drift velocity of these electrons?

A) 2.7 × 10^-5 m/s
B) 9.1 × 10^-5 m/s
C) 5.2 × 10^-5 m/s
D) 1.1 × 10^-5 m/s
E) 7.4 × 10^-5 m/s