difference between resistance and resistivity???
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Resistivity
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.
The resistance of some materials decreases tremendously with a decrease in temperature in the very low temperature range of the order of absolute zero. Such substances are called superconductors.
Conductivity is the reciprocal of resistivity, and determines the ability of a material to conduct electric current.
Resistance
Resistance of a conductor is the obstruction offered by the conductor in the flow of current through it. It is measured by the potential difference needed across the conductor to flow one ampere current through it.
The resistance of a conductor depends upon its material, temperature, length and area of cross section.
S.I. unit of resistance is ohm.
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.
The resistance of some materials decreases tremendously with a decrease in temperature in the very low temperature range of the order of absolute zero. Such substances are called superconductors.
Conductivity is the reciprocal of resistivity, and determines the ability of a material to conduct electric current.
Resistance
Resistance of a conductor is the obstruction offered by the conductor in the flow of current through it. It is measured by the potential difference needed across the conductor to flow one ampere current through it.
The resistance of a conductor depends upon its material, temperature, length and area of cross section.
S.I. unit of resistance is ohm.
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11
⭕️Resistivity is also known as electrical resistivity.
⭕️Its a property that quantities how strongly a material opposes the flow of electric current.
⭕️A low resistivity indicates a material that allows the flow of electric current.
⭕️Its SI unit is ohm (symbol - Ω).
⭕️It's named after German physicist Georg Simon Ohm.
⭕️Resistivity of a conductor is a property of the material of the conductor.
⭕️ Unit of resistivity is Ohm meter, Ω m.
⭕️Resistivity of the material of the conductor changes with temperature.
⭕️Resistivity of copper is 1.7 × 10 -8 Ω m at room temperature.
⭕️Its a property that quantities how strongly a material opposes the flow of electric current.
⭕️A low resistivity indicates a material that allows the flow of electric current.
⭕️Its SI unit is ohm (symbol - Ω).
⭕️It's named after German physicist Georg Simon Ohm.
⭕️Resistivity of a conductor is a property of the material of the conductor.
⭕️ Unit of resistivity is Ohm meter, Ω m.
⭕️Resistivity of the material of the conductor changes with temperature.
⭕️Resistivity of copper is 1.7 × 10 -8 Ω m at room temperature.
margarita41:
nice answer easy to read didi
thank you ♥
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