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Not sure,
in my 9th standard (level of Indian standard education),we studied about conductors....."when temperature increases conductivity of a conductor is also increases".
but it is not true in all case because of the properties of the conductors.
in some case ...'temperature increase the resistance of a conductor increases so conductivity decreases '.
for example: in olden days electronic equipments is more efficient when the atmospheric temperature increases or presence of heat .
Wiki User
∙ 13y ago
Wiki User
∙ 16y agoabsolutely, the first superconductors were in liquid helium -425 degrees Fahrenheit
to allow them to conduct with no resistance.
Wiki User
∙ 13y agoThe resistance changes according to its temperature coefficient of resistance, a number in units of degrees/ohm. Ideally it is as close to 1 as possible (no change).
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A material showing perfect conductivity and Meissner effect below a critical temperature?
The Meissner effect refers to the expulsion of magnetic flux when a material becomes superconducting in a magnetic field. A material that shows perfect conductivity is called a superconductor.
Define thermal conductivity?
ability of the material to resist the temperature
Does the value of thermal conductivity depend on the dimension of the specimen?
Thermal conductivity is an intensive property. It is inherent in the material but not dependent on the amount of material. This should not be confused with the rate of heat conduction which can depend on the dimensions of a material. There is one case where the thermal conductivity might depend on the dimension of the material - when the conductivity is not uniform with direction, i.e. where conductivity laterally is different from conductivity longitudinally. When the orientation of the material changes the conductivity, the dimensions can have an effect on the apparent bulk thermal conductivity.
How does the cup a liquid is in affect its temperature?
By the heat conductivity the material the cup is made from.
Effect of temperature on specific heat of material?
The effect of temperature on specific heat of material is referred to as specific heat capacity.
A material showing perfect conductivity and Meissner effect below a critical temperature?
The Meissner effect refers to the expulsion of magnetic flux when a material becomes superconducting in a magnetic field. A material that shows perfect conductivity is called a superconductor.
A material showing perfect conductivity and Meissner effect below a critical temperature Is this true or false?
Superconductor
Define thermal conductivity?
ability of the material to resist the temperature
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.
Does the value of thermal conductivity depend on the dimension of the specimen?
Thermal conductivity is an intensive property. It is inherent in the material but not dependent on the amount of material. This should not be confused with the rate of heat conduction which can depend on the dimensions of a material. There is one case where the thermal conductivity might depend on the dimension of the material - when the conductivity is not uniform with direction, i.e. where conductivity laterally is different from conductivity longitudinally. When the orientation of the material changes the conductivity, the dimensions can have an effect on the apparent bulk thermal conductivity.
How does the cup a liquid is in affect its temperature?
By the heat conductivity the material the cup is made from.
Which of these has the greates effect on the electrical conductivity of solutions?
Influence on the electrical conductivity of solutions:- types of substances dissolved- concentration of solutes- temperature
What materials are partially conductive?
conductivity is a result of free electrons meaning that they can be riped away fast and the temperature of the material. a colder material has a lower resistance and higher conductivity. materials like metallic oxides have low conductivity and materials like pure copper and aluminum have high conductivity.
Effect of temperature on specific heat of material?
The effect of temperature on specific heat of material is referred to as specific heat capacity.
Effect of temperature N-type semiconductor?
Type your answer here... conductivity is decreases with temp
What combination of factors is most suitable for increasing the electrical conductivity of metals?
Resistivity is a constant for any particular material, and independent of that material's physical dimensions or shape. However, it does vary with temperature which is why resistivity is always quoted at a particular temperature. Variations in resistivity due to temperature change is the reason that the resistance of a material varies with temperature. In SI, resistivity is expressed in ohm metres.
What influences radiational cooling?
Properties of the material such as thermal conductivity, specific heat, and emissivity, and the temperature of the surroundings.
