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Resistivity Calculator
The Resistivity Calculator allows use to easily calculate the resistivity of a component like a wire or coil, based on its resistance value, its length, and its cross-sectional area. Resistivity, unlike resistance, is a measure of the resistance of a given size of a particular material, or in basic terms the resistivity of a material is the amount of resistance it may provide to a current depending on its dimensions. The resistivity of any material directly depends on the material’s cross-sectional area. The greater the cross-sectional area of a material, the greater the resistivity will be. Likewise, the smaller the cross-sectional area, the lower the resistivity will be. In addition to area, the resistivity also depends directly on the resistance of the material. The resistivity of a material is inversely proportional to the length of the material. The greater the length of the material, the lower the resistivity and the smaller the length of the material, the greater the resistivity.
Equation
Where:
Resistivity (ρ) = resistivity of the material in ohm-m (Ω-m)
Resistance (R) = resistance of the material in ohms
Length (L) = length of the material in meters
Area (A) = cross-sectional area of the material in square meters (m2)