A copper wire has a radius of 1 mm and carries current 1 A. What is the drift velocity of electrons? Copper has one free electron per atom. The atomic mass of copper is 63.5 times the mass of a proton. The copper density is 8.94 g/cm³.
A. 0.074 mm/s
B. 0.037 mm/s
C. 0.024 mm/s
D. 0.012 mm/s
E. 0.061 mm/s
