35 versus 70 µm at equal geometryIllustrative R = ρL/A comparison at a fixed conductor temperature. Results use 35/70 µm and approximate copper resistivity; no thermal or current-rating claim is made.35 versus 70 µm at equal geometry100 mm × 2 mm; 75°C entered conductor temperature; 5 A DC.35 µm0.726 W70 µm0.363 WHalf the calculated resistance and loss.Temperature and allowed current remain separate questions.Թtv engineering illustration · conceptual, not to scale · examples are not acceptance limits