# What is the resistance of CU?

## What is the resistance of CU?

Resistivity and Temperature Coefficient at 20 C

Material Resistivity ρ (ohm m)
Copper 1.68 x10-8
Copper, annealed 1.72 x10-8
Aluminum 2.65 x10-8
Tungsten 5.6 x10-8

## How many ohms does copper wire have?

Common Wire Gauges

AWG wire size (solid) Diameter (inches) Resistance per 1000 ft (ohms)
16 0.0508 4.016
14 0.0640 2.525
12 0.0808 1.588
10 0.1019 0.999

How do you determine the resistance of a copper wire?

Engineers often ask how to calculate the resistance of a cable, there is a very simple formula that works well within an ohm or so with copper cable. 19 ÷ by 2.5mm² will give you 7.6 ohms per km. ÷ by 1000 for resistance per meter. 19 ÷ by 4mm² will give you 4.75 ohms per km.

Does copper wire have resistance?

Copper has a lower resistivity and is a better conductor of electricity than iron. Why? The resistance of a wire increases with length. Because resistance is the property of a material that resists electron flow, it makes sense that the more material you have (longer length) the more resistance you will have.

### What is the resistance of this wire?

The resistance of a wire is directly proportional to its length and inversely proportional to its cross-sectional area. Resistance also depends on the material of the conductor. See resistivity. The resistance of a conductor, or circuit element, generally increases with increasing temperature.

### What is the resistance of 1.5 mm cable?

Table 5.5 – Resistance per metre of copper conductors at 20°C for calculation of R1 + R2
Conductor cross-sectional area (mm²) Resistance per metre run (m ohms / m)
1.0 18.1
1.5 12.10
2.5 7.41

What is the resistivity of a Nichrome wire?

Resistivity of some common materials

Material Resistivity (OHM-CMIL/FT) Resistivity (10−6 OHM-CM)
Nichrome 675 112.2
Nichrome V 650 108.1
Nickel 41.69 6.93
Platinum 63.16 10.5

Which has more resistance carbon or copper?

In parallel, we have computed the fundamental resistances for bundles of single walled carbon nanotubes and compared them with that of a single copper wire of similar dimensions. We find that the resistance of carbon nanotube bundles is smaller than that of the copper wires for dimensions below 60 nm.

#### What is the resistance of a copper wire 200 ft long?

5.17 ohm
The calculated value of the resistance of the given copper wire is 5.17 ohm.

#### Is copper electrical resistance low?

Copper has very low electrical resistance.

What is the electrical resistance in copper wire?

Electrical resistance in copper wire: For full table with Electrical Resistance and Weight -rotate the screen! AWG Gauge* Area (Circular Mils) Diameter (mils, 1000th in) Electrical Resistance (Ohms/1000 ft) Weight (lb/1000 ft) at 77oF (25oC) at 149oF (65oC) 0000 (4/0) 212000 460 0.0500 0.057 641 000 (3/0) 168000 410 0.0630 0.073 508 00 (2/0)

How does the diameter of a wire affect its resistance?

The cross-sectional area of a wire determines it’s resistance and current-carrying capacity. The large the wire diameter, the less resistance it has to the flow of electrons, and the more current it can carry without overheating. The table below list copper wire resistance for various gauges of copper wire.

## How does the size of a copper wire affect current?

The larger the copper wire size the less resistance and hence the more current it can carry without over-heating. Resistance impedes to the flow of electrons and causes a voltage drop across the wire.

## What is the electrical resistance in single core conductors?

Sponsored Links Electrical resistance in single core conductors: Cross Sectional Area (mm2) Resistance (ohm/km) Resistance (ohm/km) Copper Aluminum 0.5 34.5 53 0.75 23 35.3 1.0 17.2 26.5