Show variation of resistivity of copper as a function of temperature in a graph.

Explanation

To show the variation of resistivity of copper as a function of temperature, we can follow these steps:

### Step 1: Understand the Formula
The resistivity (ρ) of a material at a temperature (T) can be calculated using the formula:
\[ \rho(T) = \rho(0) \times (1 + \alpha \times \Delta T) \]
where:
- \( \rho(T) \) = resistivity at temperature T
- \( \rho(0) \) = resistivity at 0°C
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