👉 Resistivity is a measure of the opposition between an electric current and a magnetic field. It can be defined as the ratio of the resistance of an object to its current, in terms of the direction of flow. In other words, it's like how the more resistive something is, the harder it is for electricity or magnetism to pass through it. For example, if you have a piece of paper that is very resistant to electric currents, it means that it's very hard to push
