A current of 1.0 A exists in a copper wore of cross-section `1.0mm^(2)`.Assuming one free electron per atonm calculate the drift speed of the free electrons in the wire.The density of copper is `9000kgm^(-3)`.

Explanation

To calculate the drift speed of free electrons in a copper wire, we can follow these steps:

### Step 1: Understand the given data
- Current (I) = 1.0 A
- Cross-sectional area (A) = 1.0 mm² = \(1.0 \times 10^{-6}\) m²
- Density of copper (ρ) = 9000 kg/m³
- Atomic mass of copper (M) = 63.5 g/mol = \(63.5 \times 10^{-3}\) kg/mol
- Charge of an electron (e) = \(1.6 \times 10^{-19}\) C
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