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    				| 1. | 
                                    Is there any difference between resistance and resistivity? If yes, tell the difference. | 
                            
| Answer» No.\xa0Resistance\xa0is the physical property\xa0of a\xa0substance because\xa0of\xa0which\xa0it\xa0opposes the flow\xa0of\xa0current i.e. electrons.\xa0Resistivity\xa0is the physical property\xa0of a\xa0particular substance which is having particular dimensions.\tSl. No.Differentiating PropertyResistanceResistivity1DefinitionResistance 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.2ProportionalityResistance 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.3SymbolRρ4FormulaR = V/I or, R = ρ(L/A)V = Voltage, I = Current, ρ = Resistivityρ = (R×A)/L R = Resistance, L= Length, A = Cross-sectional area5SI UnitsThe SI unit of resistance is OhmsThe SI unit of resistivity is Ohms-meter.\t | |