Enter the length in meters
Enter the area in square millimeters
Formula:
R = ρL / A
Where:
R = Resistance (Ω)
ρ = Resistivity (Ω·m)
L = Length (m)
A = Cross-sectional area (m²)
R = ρL / A
Where:
R = Resistance (Ω)
ρ = Resistivity (Ω·m)
L = Length (m)
A = Cross-sectional area (m²)
Current Density Limits (J)
• Copper: 6 A/mm²
• Aluminium: 4 A/mm²
These are typical safe current densities for continuous operation.
• Copper: 6 A/mm²
• Aluminium: 4 A/mm²
These are typical safe current densities for continuous operation.
Results
Resistance: -- Ω
Maximum Safe Current: -- A
Resistivity (ρ): -- Ω·m