what is resistivity? in physics
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Here is your answer,
✔The resistivity of a material is the resistance of a wire of that material of unit length and unit cross-sectional area. The unit for resistivity is the ohm-metre.
✔The resistivity of a material depends on its nature and the temperature of the conductor, but not on its shape and size.
✔A good conductor has less resistivity, whereas a bad conductor or insulator has high resistivity.
✔The resistivity of semi-conductors lies between that of conductors and insulators. The resistivity of a metallic conductor increases with an increase in its temperature, whereas the resistivity of a semi-conductor decreases with an increase in its temperature.
Hope it helps you!
Here is your answer,
✔The resistivity of a material is the resistance of a wire of that material of unit length and unit cross-sectional area. The unit for resistivity is the ohm-metre.
✔The resistivity of a material depends on its nature and the temperature of the conductor, but not on its shape and size.
✔A good conductor has less resistivity, whereas a bad conductor or insulator has high resistivity.
✔The resistivity of semi-conductors lies between that of conductors and insulators. The resistivity of a metallic conductor increases with an increase in its temperature, whereas the resistivity of a semi-conductor decreases with an increase in its temperature.
Hope it helps you!
Answered by
48
The resistivity is the resistance per unit length
and per unit of cross-sectional area at a specified temperature.
the SI resistivity unit, the ohms metre.
the SI resistivity unit, the ohms metre.
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