A Silver Wire Has a Cross Sectional Area a =

question 38

Multiple Choice

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

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