Wire Resistivity Calculator | Wire Resistivity Formula
This page covers Wire Resistivity Calculator and Resistivity Formula. This resistivity calculator takes wire resistance, wire length and wire cross sectional area as inputs and calculates resistivity as output.
Resistance of electric conductor depends on following factors.
• Length of conductor
• Cross sectional area of the conductor
• Type of conductor material
• Temperature of the material
➤Resistance (R) = ρ* l / a , Ohms
Where, ρ = Resistivity of the material (in Ohm-meters)
l = length of wire, (in meters)
a = cross section area of wire (in meter2)
• Resistivity varies with temperature.
• Good conductors of electricity possess low values of resistivity.
• Good insulators have high value of resistivity.
• Following are the resistivity values of some of the popular materials.
➤Copper : 1.7 x 10-8 Ωm
➤Aluminium : 2.6 x 10-8 Ωm
➤Carbon : 10 x 10-8 Ωm
➤Glass : 1 x 108 Ωm
➤Mica : 1 x 10-13 Ωm
Wire Resistivity calculator
Following Wire Resistivity calculator calculates resistivity of the wire with formula provided below.
Example of Wire Resistivity calculator:
INPUTS : Wire resistance = 0.25 Ω , Wire length = 40 meters, Area = 3.2 mm2
OUTPUTS: Resistivity = 2 x 10-8 Ω*m
Resistivity Formula or Equation
Following Resistivity formula is used for calculation in this calculator.
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