I know what resistivity of materials are like, and is given by the formula: R = ρ L A However what is the volume resistivity of materials like copper and aluminium for instance? How do we calculate the volume resistivity of materials, because this was confusing when I read the site:Method of calculating eddy currents of a conductor, is this correct?Where there is the answer given by Floris states the equation: F = v ⋅ B 2 ⋅ A ρ / t Where ρ is given to be the volume resisitivity.My question:how do we measure the volume resistivity of a material for example aluminium?what happens if the thickness of the material changes?

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I know what resistivity of materials are like, and is given by the formula:  R  =            ρ      L        A  However what is the volume resistivity of materials like copper and aluminium for instance? How do we calculate the volume resistivity of materials, because this was confusing when I read the site:Method of calculating eddy currents of a conductor, is this correct?Where there is the answer given by Floris states the equation:  F  =            v      ⋅              B        2            ⋅      A              ρ              /            t      Where   ρ is given to be the volume resisitivity.My question:how do we measure the volume resistivity of a material for example aluminium?what happens if the thickness of the material changes?

verdesett014ci · Accepted Answer

The volume resistivity is an intrinsic quantity of materials, just like masss density; meaning it doesn&#039;t depend on the amount of matter in materials. In other words, since   ρ is an intrinsic property, its value doesn&#039;t depends on the material size (to answer your second question).(To answer your first question) Practically, you can measure it for a given material by sampling the material in question with different sizes and average the results.   ρ is calculated with rearranging the equation you mentioned:  ρ  =            R      A        L  You can certainly measure   R with multimeter/Ohmmeter, and A &amp;amp; L with your ruler

I know what resistivity of materials are like, and is given by the formula: R =

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