A current of 2 A is flowing through a wi...

A current of 2 A is flowing through a wire of length 4 m and cross-sectional area `1 mm^(2)`. If each cubic metre of the wire contains `10^(29)` free electrons, find the average time taken by an electron to cross the length of the wire.

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The correct Answer is:

`3.2xx10^(4)s`

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