There is a copper wire of radius 1mm and it carries a current of 2 ampere, calculate the drift speed of electrons assuming there are `8.5 xx10^(28)` free electrons per metre cube.

Explanation

To calculate the drift speed of electrons in a copper wire, we can use the formula:

\[ I = n \cdot A \cdot e \cdot V_d \]

Where:
- \( I \) = current (in amperes)
- \( n \) = number of free electrons per unit volume (in m³)
- \( A \) = cross-sectional area of the wire (in m²)
...