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How do you calculate the resistance of 1km long copper wire?

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How do you calculate the resistance of 1km long copper wire?

Expert Answer:

  1. Resistance R = ρ × (L/A)
  2. where ρ= 1.7 × 10-8 Ω-m is resistivity of copper, L is length of wire and A is area of cross section .
  3. R = ( 1.7 × 10-8 × 1000 ) / ( π × 10-6 ) = 5.411 Ω

What is the resistance of 1 000 feet of No 14 copper wire?

Consider this: One thousand feet of 14 AWG solid wiring has a resistance of 2.53 ohms. The same length of 12 AWG has a resistance of 1.59 ohms.

How do you calculate cross-sectional resistance?

The resistance R of a cylinder of length L and cross-sectional area A is R=ρLA R = ρ L A , where ρ is the resistivity of the material.

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How do you calculate resistance length?

resistivity = resistance × area / length b) A wire made of a copper alloy is 5 m in length and has a cross-sectional area 1 mm2. Its resistance is 0.15 W.

What is the resistivity of 1 km long copper wire?

(a) Calculate the resistance of 1 km long copper wire of radius 1 mm. Resistivity of the copper is 1.72 x 10-12 m. (a) Calculate the resistance of 1 km long copper wire of radius 1 mm. Resistivity of the copper is 1.72 x 10-12 m.

How do you calculate the resistance of a wire?

Our wire resistance calculator uses the following resistance formula: R = ρ * L / A. where. R is the resistance in Ω, ρ is the resistivity of material in Ω * m, L is the length of wire, A is the cross-sectional area of the wire. You can use this wire resistance calculator to estimate conductance too, since: G = σ * A / L. where

How do you calculate the ohms of a copper wire?

K = 10.4 (a constant, ohms per mil foot for copper) A = cross-sectional area in circular mils R = resistance of conductor in ohms For example, to calculate the resistance of a 250-foot #10-gauge copper wire, multiply length by the constant 10.4, then divide by the cross-sectional area for #10-gauge wire as the following steps show:

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What is the relation between resistance and conductance?

Conductance formula and resistance formula 1 R is the resistance in Ω, 2 ρ is the resistivity of material in Ω * m, 3 L is the length of wire, 4 A is the cross-sectional area of the wire.

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