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We will show you how to determine wire resistance manually and using the Wire Resistance Calculator below (just input the wire gauge and length of the wire to get the resistance in Ohms). Resistance in wires depends on specific resistivity, length, and cross-section of the wire.
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25 lis 2010 · Gauge, weight, circular mils and electrical resistance in copper wire. Electrical resistance in copper wire: For full table with Electrical Resistance and Weight - rotate the screen!
25 lip 2024 · Our wire resistance calculator uses the following resistance formula: R = ρ × L / A. where: R — Resistance in Ω; ρ — Resistivity of material in Ω × m; L — Length of the wire; and; A — Cross-sectional area of the wire. You can use this wire resistance calculator to estimate conductance too, since: G = σ × A / L. where:
Wire resistance formula says: •A 1.595769121606 mm (millimeters) diameter wire has a 2 mm² (square millimeters) cross section area. If such copper (Cu) wire is 30m (meters) long, its resistance is 263.1578947368mΩ (milliohms).
The resistance of a wire is determined by the material, length and cross-section of the wire. You can calculate the resistance of a wire with the calculator below or calculate it yourself with the formulas.
Wire Sizes and Resistance The resistance of a length of wire is described by R = ρ l a where ρ = resitivity of copper; 10.371 Ω /cir. mil-ft l = length of the wire a = cross sectional area of the wire in cir. mil For Solid Wire Gauge Dia. mils Cross Section cir mil Ω /1000' 16.00 51.00 2580.00 4.10 18.00 40.00 1620.00 6.53 20.00 32.00 1020. ...
The American Wire Gauge (AWG) measurement system was designed with a purpose: for every three steps in the gauge scale, wire area (and weight per unit length) approximately doubles. This is a handy rule to remember when making rough wire size estimations!
