A-Level Physics

Practice session

In a metal wire of cross-section A = 1.0 x 10^-6 m^2, the number density of free electrons is n = 1.0 x 10^29 m^-3 and the current is 1.6 A. The mean drift velocity of the electrons is closest to (e = 1.6 x 10^-19 C):

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