Resistivity The resistivity of a material is the resistance of a wire of that material of unit length and unit cross-sectional area. The unit for resistivity is the ohm-metre. The resistivity of a material depends on its nature and the temperature of the conductor, but not on its shape and size. ☺️☺️☺️☺️☺️Resistance of a conductor is the obstruction offered by the conductor in the flow of current through it. It is measured by the potential difference needed across the conductor to flow one ampere current through it. ???????????
Resistence-redistence can oppose the current andReativity – restivity means it is based on the length, and area of the wire but it also oppose the current