A current of 1.6 A is flowing through a wire having cross-sectional area `1 mm^2`. If density of free electrons in the material of the wire is `10^29` per `m^3`, the drift velocity of electrons will be:
| A. |
`10^-4` m/s |
 |
| B. |
`10^-3` m/s |
| C. |
`10^-2` m/s |
| D. |
0.1 m/s |