Simply resistivity or Electrical resistivity is the resistance of the flow of current from one end to the other in a material. Electrical resistivity is a simply accessible and informative quantity to describe the material. It is the reciprocal of electrical conductivity. The resistivity is represented as ρ and it is directly proportional to the material resistance and length. Resistivity is inversely proportional to the area of cross-section of the given material.
Formula of Resistivity
The resistivity formula is expressed as
Where ρ is the resistivity, R is the resistance, l is the length of the material and A is the area of cross-section.