The product of resistivity and conductivity of a conductor is constant. Is this statement true or false?

Explanation

To determine whether the statement "The product of resistivity and conductivity of a conductor is constant" is true or false, we can analyze the relationship between resistivity and conductivity.

### Step-by-Step Solution:

1. **Define Resistivity and Conductivity**:
- Resistivity (ρ) is a measure of how strongly a material opposes the flow of electric current.
- Conductivity (σ) is a measure of how easily electric current can flow through a material.

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