The diameter of a copper wire is 2mm, if a steady current of 6.25 A is caused by `8.5xx10^(28) //m^(3)` electrons flowing throught it. Calculate the drift velocity of condu ction electrons.

Explanation

To calculate the drift velocity of conduction electrons in a copper wire, we can use the formula for current, which relates the current (I), the number density of charge carriers (N), the charge of the electron (e), the cross-sectional area of the wire (A), and the drift velocity (v):

\[ I = N \cdot e \cdot A \cdot v \]

### Step 1: Convert the diameter of the wire to radius and calculate the cross-sectional area (A).

Given:
- Diameter (D) = 2 mm = 2 × 10^-3 m
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