Question

difference between resistance and resistivity ​

Answer 1

in one Line we can say that

resistance - property

resistivity - nature

and

resistance = reciprocal of resistivity

Answer 2

Differentiating PropertyResistanceResistivity

1 DefinitionResistance is the physical property of a substance because of which it opposes the flow of current i.e. electrons.Resistivity is the physical property of a particular substance which is having particular dimensions.

2. ProportionalityResistance is directly proportional to the length and temperature while it is inversely proportional to the cross-sectional area of the material.Resistivity is only proportional to the nature and temperature of the particular material.

3. SymbolRρ4FormulaR = V/I or,

R = ρ(L/A)V = Voltage, I = Current, ρ = Resistivityρ = (R×A)/L

 

R = Resistance, L= Length, A = Cross-sectional area

5SI UnitsThe SI unit of resistance is OhmsThe SI unit of resistivity is Ohms-meter.6ApplicationsThe property of resistance is used in several places like heaters, fuses, sensors, etc.Electrical resistivity measurement is used as a quality control test for calcareous soil.