Copper has one conduction electron per a...

Copper has one conduction electron per atom. Its density is `8.89g//cm^3` and Its atomic mass is `63.54.g//mol`. If a copper wire of diameter 1.0 mm carries a current 2.0 A. The drift speed of the electrons in the wire is

`3.0xx10^-4m//s`

`1.9xx10^-4m//s`

`1.9xx10^-6m//s`

`3.0xx10^-5m//s`

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