9. Define resistivity by where the symbol have their usual meaning
Answers
Resistivity, commonly symbolized by the Greek letter rho, ρ, is quantitatively equal to the resistance R of a specimen such as a wire, multiplied by its cross-sectional area A, and divided by its length l; ρ = RA/l.
Answer:
Resistivity, electrical resistance of a conductor of unit cross-sectional area and unit length. ... A characteristic property of each material, resistivity is useful in comparing various materials on the basis of their ability to conduct electric currents. High resistivity designates poor conductors.
Explanation:
Resistance is defined as the property of the conductor which opposes the flow of electric current.
...
Difference Between Resistance and Resistivity.
Sl. No. 5
Differentiating Property SI Units
Resistance The SI unit of resistance is Ohms
Resistivity The SI unit of resistivity is Ohms-meter.
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