Physics Homework Question 31

timer Asked: May 12th, 2015

Question description

A wire has a cross-sectional area of 0.10 mm2. If there are 4.0 × 1028 atoms per cubic meter in this wire, and if each atom contributes 2 free electrons, what is the drift velocity of the electrons when the current in the wire is 6.0 A? (e = 1.60 × 10-19 C)

0.0047 m/s

0.019 m/s

0.0092 m/s

0.94 m/s

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