(a) Estimate the average drift speed of conductin electrons in a copper wire of cross sectional area `1.0xx10^(-7) m^2` carrying a current of 1.5 A. Assume that each copper atom contributes roughly one conduction electron. The density of copper is `9.0xx10^3 kgm^(-3)` and its atomic mass is `63.5 u.` (b) Compare the drift speed obtained with the speed of propagation of electric field along the conductor, which causes the drift motion.

Explanation

To solve the problem, we will break it down into two parts as given in the question.

### Part (a): Estimate the average drift speed of conduction electrons in a copper wire.

1. **Identify the given values:**
- Cross-sectional area of the wire, \( A = 1.0 \times 10^{-7} \, \text{m}^2 \)
- Current, \( I = 1.5 \, \text{A} \)
- Density of copper, \( \rho = 9.0 \times 10^3 \, \text{kg/m}^3 \)
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