Whats the resistivity of copper?
Resistivity allows us to compare different conductors' abilities to transmit electric current that is independent of the physical dimensions of the conductors.
Resistivity is defined as 'the resistance of a unit length of a substance with a uniform cross-section'. In SI, the unit of measurement of resistivity is the ohm metre; in US customary units, it is expressed in ohm circular mil per foot.
So, to finally answer your question, the resistivity of copper is 17.5x10-9 ohm metres at 20oC. To find the resistance of a copper conductor, you can then use the equation:
resistance = resistivity x (area / length)
The resistivity of copper depends on the temperature it which it is measured. At 25°C, it is about 17 nΩ.m, or 1.7 µΩ.cm.
The resistance of a conductor is then p * L / A, where p is the above number.
So for a wire with a length of 1 m (i.e. 100 cm), and a cross sectional area of 2 cm², the resistance is 17e-6 * 100 / 2 = 85 µΩ
resistivity to what? Electrical current? Heat transfer? what kind of copper? zero degrees Celsius? Read More
No. Resistivity is a physical constant, and is unaffected by the dimensions of the wire. Read More
(rho) or resistivity of a "wire" is calculated using this formule: rho = Resistance x Area / length of material the resistivity of copper is 1.7 x 10 -8 ohm/m Resistivity is measured in ohm metres, NOT ohms per metre! Read More
Copper is a material - although you can make objects from it. Resistivity is a property of materials. Resistance is a property of objects - it depends on the resistivity of the material the object is made of, the shape and size of the object, and also of where you connect to take your measurement. With all this in mind: Copper has a low resistivity. Copper objects tend to have low resistance compared to other… Read More
Copper is widely use in the US, it has the second lowest resistivity, behind silver, which is much more expensive making copper the best choice. It resistivity at 20 °C is 1.72×10−8 Read More
Because copper has a very low electrical resistivity of 16.78 nΩ·m, meaning it's easier for electricity to pass through it. For comparison, nickel has a resistivity of 69.3 nΩ·m and iron's resistivity is 96.1 nΩ·m. Read More
The best electrical conductor known is silver, not copper. Electrical resistivity of silver: 1,59.10-8 ohm.m Electrical resistivity of copper: 1,68.10-8 ohm.m A good electrical conductor has a very low electrical resistivity and a high electrical conductivity (the same principles for the thermal conductivity). Read More
The question is actually wrong, they can both have the same resistance if configured differently, the real question should be which has a higher resistivity which is the electrical resistance found in a standard amount of each material. In this case Manganin has a higher resistivity than copper. Read More
The resistivity of copper is very low and as the strip is so thick then resistance would be almost zero. Read More
Copper, aluminum, steel and lead in that order. Read More
Conductivity is a measure of the ability of a substance to conduct electricity. Resistivity is a measure of how strongly a substance resists the flow of an electric current. So conductivity and resistivity are opposed to each other. A good conductor like copper has a low resistivity, and a good insulator like glass has a low conductivity and a high resistivity. Mathematically, conductivity and resistivity are inverses of each other, so it is quite easy… Read More
Yes, because the resistivity does not depends on the length of any materials. Resistivity is constant. -Ariel DUmancas- No. The resistance in different materials is different. For example, Copper has a low resistance to electricity compared to plastic. This is also one reason why copper is used instead of plastic in wires. Knowing the resistance of different material helps decide what material should be use for different objects (like copper for wires in plastics) Read More
Copper pipes are used in refrigeration system because of their great resistivity to corrosion and oxidation ( last longer). Furthermore, it is very malleable. Read More
Copper is not used in potentiometer due to the following reasons: 1)Low resistivity 2) High Temperature Coefficient of resistance Read More
Resistivity is a property of the material only, not of the dimensions of the wire. The resistance of a wire is the resistivity times the length divided by the cross-section area. So a long wire has more resistance, a thicker wire has less resistance, even if they are both made of copper with the same resistivity. Read More
purple copper orange purple copper orange Read More
Aluminium wire can be used because it has low resistivity Read More
A copper wire has diameter 0.5mm and resistivity of 1.61010101010101010 ohm meter what will be the length of the wire to make its resistance 10 ohm?
6.2 Read More
Metals. Copper has one of the lowest resistivities. Resistivity is a measure of how easily electricity flows - the lower the better the electricity flows. Silver has an even lower resistivity but obviously it is more expensive. Aluminium is also good but it oxidises so would not be as good a conductor as copper which resists oxidation. Read More
Copper wires are made of copper and aluminimum wires are made of aluminimum. Don't work aluminimum wiring unless you know exactly what you are doing. It will react with copper wire and wiring devices and will start a fire. There is special grease and wiring devices to prevent this that you need to use. If you have aluminimum wire, make sure you do your homework. ------- The electrical capacity of any type of cables/wires are… Read More
Copper alloy is often used in preference to pure copper due to its hardenss. Pure metals are usually soft and can be cut easily. They are not suitable for making any hard bodies. Therefore, alloys are used. Read More
Resistivity of electrodeposited low-phosphorus nickel was estimated on the Imagineering finishing Technologies site (http://www.iftworldwide.com/solutions/electroless_nickel.htm) as 20 microohm-cm, presumably at room temperature. That is about twelve tiimes more resistive than copper. Read More
Copper is good for use for electrical wiring because it has very low resistivity and is therefore an excellent conductor of electricity. It is not nearly as good a conductor as silver, but it is a lot less expensive. Read More
That depends on the specific material of the insulator versus the specific material of the metal. But the answer is easily in the millions. This is your lucky day! Just for you, today, we're having a special. I went and found a list with actual numbers and everything, and I compared glass with copper. Depending on the composition of the glass, the ratio of resistivities is between 5.95 billion billion and 5.85 thousand billion billion… Read More
The resistivity of lead is 208 n.Ohm.m (at 20 degrees celsius) in comparison, the best conducter, silver, has a resistivity of 15,87 n.Ohm.m widely used conducter, copper, has a resistivity of 16,78 n.Ohm.m , considered to be a good conductor resistivity of iron, considered not to be the a good conductor at all is 97 n.Ohm.m So no, lead is not a good conducter. But keep in mind, it's still a conductor, don't use it… Read More
Copper is a pure metal while kanthal is an alloy. An alloy is a material consists of mixture of two or more elements that are metals and nonmetals. Therefore, kanthal alloy is a metal with addition of some alloy elements such as iron, chromium and aluminum. The addition of alloy elements to pure metals caused additional scattering of the conducting electrons and thus increase the electrical resistivity of pure metals. As the temperature increases, the… Read More
When an iron nail is placed in copper sulphate the iron becomes coated with copper whats this reaction?
a single replacement reaction Read More
No. It is highly resistive: resistivity is 2×1015 Ω·m. (compare with copper, 16.78 nΩ·m). Please see the links. Read More
Copper is a conducting material, not a semiconducting one. It's perhaps the most widely used conductor because it offers the best combination of low resistivity and low cost. Read More
If a wire of resistivity is stretched to thrice its initial length what will be its new resistivity?
the resistivity will increase by nine times Read More
if length is doubled then resistivity increases&when area is doubled resistivity decreases. Read More
A superconductor. It has zero resistance, and therefore zero resistivity. A superconductor. It has zero resistance, and therefore zero resistivity. A superconductor. It has zero resistance, and therefore zero resistivity. A superconductor. It has zero resistance, and therefore zero resistivity. Read More
no it does not, because it conducts heat and electricity Answer The word you are looking for is 'lose', not 'loose'! And the answer is yes. The resistivity of copper increases with temperature, so raising its temperature will cause its resistance to rise or, if you prefer, its conductivity to fall. Read More
It is not a right perception to think that alloys have high resistivity. Alloys can have high resistivity or low resistivity than the actual elements. You might be thinking that alloys have high resistivity as many resistors are made of alloys. But by altering the composition of elements, we can also make an alloy of very low resistivity. Read More
Can we construct two wires of same length one of copper and one of iron that would have same resistance at the same temperature?
For a single temperature, yes. The copper wire will have a much smaller cross-section than the iron wire. For multiple temperatures, no. Copper and iron have different temperature coefficients for resistivity. Read More
whats the balanced chemical equation Read More
Resistance is affected by the length, cross-sectional area, and resistivity of the conductor. The resistivity, in turn, is affected by temperature. So only by changing one of these four factors will the resistance of a conductor change. Changing voltage will have no affect upon the conductor's resistance. Read More
Taken in the inverse: Conductivity means how a conductor of electricity will allow electromotive force (EMF) to be passed through it. Now on to your question: Resistivity means how a conductor of electricity will prohibit electromotive force (EMF) to be passed through it. Assume a piece of 14 gauge copper wire, versus 14 gauge aluminum wire. (Wire you can buy for your house, from home depot or lowes). The copper wire has more free electrons… Read More
Interesting and very difficult to put into x amount of letters. Read More
Resistivity is the opposite of conductivity. The thermal resistivity of soil is the degree to which soil impedes the flow of heat, or insulates against heat. Read More
Work it out for yourself. The equation you will need to use is: resistance = resistivity x (cross-sectional area / length) Manipulate the equation to make 'length' the subject, and use 17.25 x 10-9 ohm metres as the value of resistivity. Read More