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Difference between resistance and resitivity |
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Answer» 1 Resistance- Resistance of conductor is a physical property of conductor which resists the flow of charge.Resistivity_ Resistivity of a substance is the physical property of substance whuch have particular dimensions 2 Resistance is donated by R.Resistivity is denoted as (rho).3 S I unit of resistance of Ohms S I unit of Resistivity is ohms-metre \tResistanceResistivityResistance 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.Resistance 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.RρR = V/I or, R = ρ(L/A)V = Voltage, I = Current, ρ = Resistivityρ = (R×A)/L R = Resistance, L= Length, A = Cross-sectional areaThe SI unit of resistance is Ohms.The SI unit of resistivity is Ohms-meter.The 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.\t |
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