**Electron Scattering and Matthiessen’s Rule**

**Matthiessen’s Rule:**

The resistivity ρ of a metal containing small amount of impurities may be written as:

ρ = ρ_{0i}+ ρ(T) (1)

Where ρ_{ 0 }is a constant which increases with increasing impurity content and ρ (T) is the temperature –dependent part of the resistivity.

**Equation (1) is known as the Matthiessen’s rule **

**Explanation. Continue reading “Matthiessen’s Rule”**