# Resistance in a straight conductor

## Table of Contents

The formula for resistance in a straight conductor (e.g. a wire) is:

$$ R = \frac{\rho l}{A} $$

Where

- \(\small R \) is the resistance,
- \(\small \rho \) is the resistivity of the material,
- \(\small l \) is the length of the conductor, and
- \(\small A \) is the cross-sectional area of the conductor.