Here's why:

* Ohm's Law describes the relationship between voltage, current, and resistance in a conductor. It's a fundamental law in electrical circuits, but it doesn't define the electrical properties of materials themselves.

* Material properties like conductivity, resistivity, and dielectric constant are determined by the atomic structure and behavior of the material.

* Ohm's Law is a tool to analyze circuits, but it doesn't describe the underlying physics of how materials conduct electricity.

Let me know if you have any other questions!