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What is the difference between resistance and resistivity?
The differences between resistivity and resistance are as follow:
| Resistance | Resistivity |
| 1. It is the physical property of a material that opposes the flow of current i.e. electrons via circuit. | 1. It is the physical property of a particular substance, having specific dimensions. |
| 2. It is represented by the symbol R. | 2. It is represented by the symbol ρ. |
| 3. Its SI unit is Ohms (Ω). | 3. Its SI unit is Ohms-meter (Ω-m). |
4. Its formula is $R=\frac{V}{I}$, or $R=\frac{\rho \times L}{A}$ where R = Resistance, V = Voltage, and I = Current, ρ = Resistivity, L= Length, A = Cross-sectional area. | 4. Its formula is $\rho =\frac{R\times A}{L}$, where ρ = Resistivity, R = Resistance, L= Length, A = Cross-sectional area. |
| 5. It depends upon the length, cross-sectional area and the temperature of material inside the conductor. | 5. It depends upon the nature and temperature of the material. |
6. The property of resistance is used in several places like heaters, kettles, fuses, sensors, high-frequency instruments, power control circuits, etc. | 6. The property of resistivity is used effectively in the quality control test, to determine the depth of the water table, detects fracture zones and faults, water resource management, etc. |
Updated on: 10-Oct-2022
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