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0.213 n ohm - m
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∙ 14y ago
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Can you use copper wire instead of eureka wire in finding its resistivity?
no
Why copper strips are used in meter bridge wire?
The resistivity of copper is very low and as the strip is so thick then resistance would be almost zero.
How do you convert conductivity to resistivity?
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 to convert conductivity to resistance.
Does a thin wire has more RESISTIVITy or a thin wire of the same material?
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.
What material allows electricity to pass through it easily?
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.
Why is copper used for electricial wiring?
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.
How do you calculate resistivity of copper wire?
(rho) or resistivity of a "wire" is calculated using this formule:rho = Resistance x Area / length of materialthe resistivity of copper is 1.7 x 10 -8 ohm/mResistivity is measured in ohm metres, NOT ohms per metre!
Why is copper wire the best known conductor?
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).
Can you use copper wire instead of eureka wire in finding its resistivity?
no
What is the resistivity of copper at 75 degrees?
0.02 micro ohm /meter
Which one of the following has the lowet resistivity -aluminium -copper -steel -lead?
Copper, aluminum, steel and lead in that order.
What is the specific resistance of copper and aluminum?
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
What is 77 degrees Fahrenheit in Kelvin?
77 deg Fahrenheit (not farenhite!) = 298.15 K
What is the conductivity of material materials?
Thermal Conductivity is analogous to electrical conductivity. To calculate electrical resistance look-up rho (resistivity). For Copper rho = 1.68�10-8 Ohms-meter Resistance = resistivity (rho) � length/area For thermal conductivity "k" (Watts/m°C) is the coefficient of thermal conduction. Heat transfer (Watts) = k � area/thickness � temperature difference.
Why copper strips are used in meter bridge wire?
The resistivity of copper is very low and as the strip is so thick then resistance would be almost zero.
From copper and manganin which has higher resistance?
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.
How do you convert conductivity to resistivity?
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 to convert conductivity to resistance.
