Threre is a current of 1.344 a in a copp...

Threre is a current of 1.344 a in a copper wire whose area of cross-sectional normal to the length of wire is `1mm^(2)`. If the number of free electrons per `cm^(2)` is `8.4xx10^(28)m^(3)`, then the drift velocity would be

`1mm//s`

`0.1mm//s`

`0.01mm//s`

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