Created By : awnish

Reviewed By : Phani Ponnapalli

Last Updated : Apr 10, 2023

With the help of the Wire Resistance Calculator, you can find the resistance and conductance of a specific wire in less amount of time. This tool takes material type, length, area and makes calculations faster to display the electrical properties of a wire in a short span of time after hitting the calculate button.

Material at 20°C:
Choose a Calculation
Resistivity (ρ)

How to Find Resistance & Conductance of a Wire?

Below given are the simple steps to find the wire Conductance and resistance. Follow these rules and regulations and get the result for your material in fraction of seconds.

  • Obtain the type of the wire material, its length and area.
  • Multiply the resistivity of the material by its length.
  • Divide the product by area of the wire to get its resistance.
  • Find the reciprocal of the resistance to check the wire conductance value.

Wire Resistance and Conductance

Wire resistance is defined as the property of a wire that opposes the flow of electric current. Resistivity is nothing but the resistance offered by the material per unit length for the unit cross-sectional area. The higher resistivity of material means it is more difficult for the flow of current.

Electrical conductivity is defined as the quantity of voltage that is required to get electric current to flow.

The formulas to get the resistance and conductance are as follows:

R = ρL/A

G = σA/L

R = 1/G


R is the resistance

ρ is the resistivity of the material

σ is the conductivity

L is the wire length

A is the cross-sectional area of the wire

G is the conductance


Question: Calculate the resistance and conductance of the material whose resitivity is 3.5 Ωm and conductivity is 0.28 S/m. The aluminium wire length is 10 m and cross-sectional area is 2 m2.


Given that

Resistivity of the wire ρ = 3.5 Ωm

Conductivity of the wire σ = 0.28 S/m

Wire length L = 10 m

Cross-sectional area A = 2 m2

Resistance of the material R = ρL/A

R = (3.5 x 10)/2

= 17.5 Ω

Conductance G = 1/R

= 1/17.5

= 0.057

Therefore, the resistance and Conductance of the wire is 17.5 Ω and 0.057 S.

Want to explore more concepts & make all your calculations much easier and faster then have a look at Physicscalc.Com and click on the available different physics calculators links to access.

Frequently Asked Questions on Wire Resistance Calculator

1. What is meant by resistance and conductance of a wire?

Wire resistance is how strongly the cable opposes the electric current flow and conductance is the quantity of a wire's ability to conduct it.

2. What are the units of resistance and conductance?

The SI unit of resistance is the ohm (Ω). The unit of conductance is siemens S.

3. What affects the resistance of a wire?

One of the important factors that affect the wire resistance is the length, thickness and temperature of the wire. By increasing the length of the wire, resistance also increases. Smaller thickness wires will have greater resistance and high-temperature results in higher resistance.


4. What is the resistivity and conductivity of copper?

The materials like copper and aluminium will always have less resistivity. So, these are better to use as an electrical cable and wire. The electrical resistivity of copper at 20°C is 1.68 x 10-8 Ωm. Conductivity of copper is 5.95 x 107 S/m.