👉 Resistivity is a measure of how much resistance there is to the flow of current through a material. It can be thought of as a property that describes how easily a material allows or blocks the passage of electrical current, and it is often used in fields such as electronics and electromagnetism. Resistivity can be measured using various methods, including: - Ohm's law: The relationship between current (I), voltage (V) and resistance (R) is given by R = V