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The current that you can put through a wire depends on the voltage you apply and the resistance of the wire. In fact;
current = voltage/resistance
Current is the sum effect of electrons moving through the wire. When the wire heats up, for example, by a torch, it causes increasing chaos in the wire, or entropy. This chaos causes the electrons to bump around more than before. Therefore, flow is with less ease. This means that the copper wire now has a higher resistance. Most metals increase their electrical resistivity by about 0.005 per degrees. So, if the resistivity of copper at 25 C is 1, then at 500 C it will be;
1+500x.005=3.5
This means if you heat your wire to 500 C, then its resistance increases 3.5 time! The current through it then drops by 3.5 times.
The conductivity of a material typically increases with temperature because higher temperatures provide more thermal energy for charge carriers to move freely. However, this relationship can vary depending on the material and its properties. In some cases, conductivity might decrease with temperature due to factors like increased scattering of charge carriers.
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When the temperature increases conductivity of conductor?
When the temperature of a conductor increases, the conductivity typically decreases. This is because higher temperatures cause the atoms in the conductor to vibrate more, leading to more collisions between electrons and atoms. As a result, the flow of electrons is impeded, reducing the conductivity of the material.
What is Rate of fall of temperature of the body is directly proportional to?
The rate of fall of temperature of the body is directly proportional to the temperature difference between the body and its surroundings, the surface area of the body exposed, and the thermal conductivity of the material between the body and its surroundings.
Why does the electrical conductivity of pure metal decrease with temperature while that of semiconductors increases?
The electrical conductivity of pure metals decreases with temperature because as temperature increases, the metal lattice vibrates more, causing more resistance against the flow of electrons. In semiconductors, as temperature increases, more electrons are promoted into the conductive band, increasing their conductivity.
How does the electrical conductivity of a semiconductor vary with temperature?
The electrical conductivity of a semiconductor typically increases with temperature. As the temperature rises, more charge carriers are generated in the semiconductor, leading to higher conductivity. This is due to the increased thermal energy that excites electrons into the conduction band.
Thermal conductivity temperature to an object that has a?
The thermal conductivity of an object refers to its ability to conduct heat. This ability can vary based on the material of the object and can change with temperature. Generally, as temperature increases, thermal conductivity also tends to increase for most materials.
What is the relationship between the number of valence electrons and conductivity of a given element?
I suppose that a relation doesn't exist.
What the relationship between the number of valence electron and the conductivity of a given element?
I suppose that a relation doesn't exist.
What is the optimum Temperature for testing water conductivity?
There is no optimum between 00C and 1000C.
What is the Relation between temperature and current?
inversly proportional
How do thermometers with in liquid in glass measure temperature?
Such thermometers are based on the fact that the liquid expands when the temperature increases. That's what the thermometers measure.
What is the relationship between sodium chloride and temperature?
There is NO relation at all.
When the temperature increases conductivity of conductor?
When the temperature of a conductor increases, the conductivity typically decreases. This is because higher temperatures cause the atoms in the conductor to vibrate more, leading to more collisions between electrons and atoms. As a result, the flow of electrons is impeded, reducing the conductivity of the material.
If an iron rod is heated to a high temperature how would it effect its conductivity?
Generally speaking conductivity of metals decreases as the temperature increases.
How do you convert conductivity and temperature to total dissolved solids TDS?
There is no direct conversion between conductivity, temperature, and total dissolved solids (TDS). Conductivity is often used as a proxy for estimating TDS, especially in water quality monitoring. TDS can be estimated using a conversion factor based on the specific characteristics of the water sample, but it is not a precise conversion. Temperature can affect conductivity readings, so it's essential to measure both parameters accurately when estimating TDS.
What is Rate of fall of temperature of the body is directly proportional to?
The rate of fall of temperature of the body is directly proportional to the temperature difference between the body and its surroundings, the surface area of the body exposed, and the thermal conductivity of the material between the body and its surroundings.
What is the relation between hardness and conductivity?
Generally, materials that are harder tend to be less conductive, while materials that are softer tend to be more conductive. This is because the arrangement of atoms in harder materials makes it more difficult for electrons to move freely, leading to lower conductivity. However, there are exceptions to this general trend based on the specific properties of the material.
Why does the electrical conductivity of pure metal decrease with temperature while that of semiconductors increases?
The electrical conductivity of pure metals decreases with temperature because as temperature increases, the metal lattice vibrates more, causing more resistance against the flow of electrons. In semiconductors, as temperature increases, more electrons are promoted into the conductive band, increasing their conductivity.
