Production Principle Description

Resistance calculated using this tool includes both dc and ac resistance of a rectangular conductor. At low frequencies, where skin depth is greater than conductor width and thickness, ac resistance is approximately the same as the dc resistance. As frequency increases, ac resistance increases.

Assumptions and Limitations

Dimensions are in meters.

Wire is assumed to have uniform circular cross section over its length.

Wire relative permeability: Symbol-muR

Wire relative conductivity: Symbol-sigmaR

Constant

Permeability of free space: Formula, Permeability of Free Space H/m

Conductivity of copper: Symbol-sigma0 = 5.98 x 10 7 S/m (Siemens per meter) at 20-degrees C

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