Electronics
Conductivity
The reciprocal view of the same material property.
The Formula
sigma = 1 / rho
The reciprocal view of the same material property.
| Symbol | Meaning | Unit | Notes |
|---|---|---|---|
| sigma | Conductivity | siemens per metre | How well the material conducts. |
| rho | Resistivity | ohm metres | How strongly it resists. |
What Each Symbol Means
sigmasiemens per metre
Conductivity
How well the material conducts.
rhoohm metres
Resistivity
How strongly it resists.
See It Worked With Real Numbers
A formula on its own does not tell you which number goes where. The how to calculate resistivity page applies this equation to a concrete case, shows every intermediate step, and names the mistakes that produce a wrong answer even when the algebra is right.
Where This Formula Appears
This equation is the working core of How To Calculate Resistivity, filed under Science. Every number the guide produces comes from substituting into this one line.