Resistivity Formula
The formula to calculate the resistivity of any material is,
ρ = RA/l
where,
- ρ is the resistivity of the material and is measured in Ω.m
- R is the electrical resistance of uniform cross-sectional material and is measured in Ω
- l is the length of a piece of material and is measured in m
- A is the cross-sectional area of the material and is measured in m2
We can also measure the resistivity of the material if the Electric Field and Current Density are given as,
ρ = E/J
where,
- ρ is the resistivity of the material and is measured in Ω.m
- E is the magnitude of the electric field and is measured in V.m-1
- J is the magnitude of current density and is measured in A.m-2
Learn more about, Resistance Formula
Resistivity
Resistance is the physical property of the material which opposes the current flow in the circuit whereas resistivity is the intrinsic property that helps us understand the relation between the dimension of the substance and the resistance offered by it.
In this article, we will learn about Resistance, Resistivity, how resistance and resistivity are related to each other, the difference between resistance and resistivity, and others in detail.
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