Draw a graph to show the variation of resistance of a metal wire as a function of its diameter, keeping length and temperature constant.

Explanation

To solve the question of how the resistance of a metal wire varies as a function of its diameter while keeping the length and temperature constant, we can follow these steps:

### Step 1: Understand the relationship between resistance, resistivity, length, and area.
The resistance \( R \) of a wire is given by the formula:
\[ R = \frac{\rho L}{A} \]
where:
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