An Electrical Component or Wire Resistivity Calculator

Formula

To calculate the Resistivity:

\[ ρ = \frac{R \times A}{L} \]

Where:

\(ρ\) is the Resistivity (Ω·m)
\(R\) is the Resistance (Ω)
\(A\) is the Cross-Sectional Area (m²)
\(L\) is the Length (m)

What is Resistivity?

Resistivity is a term used in electronics that describes the rate at which a component or wire resists the flow of electrons or electricity. It’s a resistance per unit of distance. So the longer the wire, the lower the resistivity and vice versa.

Example Calculation 1

Let's assume the following values:

Resistance (\(R\)) = 10 Ω
Cross-Sectional Area (\(A\)) = 0.001 m²
Length (\(L\)) = 2 m

Using the formula:

\[ ρ = \frac{10 \times 0.001}{2} = 0.005 \text{ Ω·m} \]

The Resistivity is 0.005 Ω·m.

Example Calculation 2

Let's assume the following values:

Resistance (\(R\)) = 5 Ω
Cross-Sectional Area (\(A\)) = 0.002 m²
Length (\(L\)) = 1 m

Using the formula:

\[ ρ = \frac{5 \times 0.002}{1} = 0.01 \text{ Ω·m} \]

The Resistivity is 0.01 Ω·m.