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There is a current of 1.344 amp in a copper wire whose area of cross-section normal to the length of the wire is `1 mm^(2)`. If the number of free electrons per `cm^(2)` is `8.4 xx 10^(22)` then the drift velocity would be
A. `1.0 mm//sec`
B. `1.0 m//sec`
C. `0.1mm//sec`
D. `0.01mm//sec`

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