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Electrical conductivity is flow of electrons between two different points having different electric potentials.
Thermal conductivity is flow of electrons between two different points having different temperatures.
Electrical Conductivity in solids, is purely based on number of free electrons (number of free electrons and holes in semiconductors). But thermal conductivity is based on number of free electrons and also phonons.
Electrical conductivity in liquids and gases is also depends on number of free electrons but thermal conductivity in liquids and gases is because of molecular collision.
What else can I help you with?
What is the difference in thermal conductivity between aluminum and steel?
Aluminum has a higher thermal conductivity than steel. This means that aluminum is better at conducting heat compared to steel.
What is the difference in thermal conductivity between steel and aluminum?
Steel has a lower thermal conductivity compared to aluminum. This means that aluminum is better at conducting heat than steel.
Do elements that have high electric conductivity also have high thermal conductivity?
Not necessarily. While there is some correlation between electrical and thermal conductivity in metals, there are exceptions. For example, diamond is a good thermal insulator despite being a good electrical insulator. Additionally, materials like ceramics can have low electrical conductivity but high thermal conductivity.
What is the thermal conductivity difference between cast aluminum and sheet plate aluminum?
I don't have a numeric answer for you, however, I do know that sheet aluminum has better thermal conductivity than cast. It has to do with the way that cast aluminum cools.
What is the relationship between thermal conductivity and the efficiency of heat transfer in a series of materials?
The relationship between thermal conductivity and the efficiency of heat transfer in a series of materials is direct. Materials with higher thermal conductivity are more efficient at transferring heat compared to materials with lower thermal conductivity. This means that heat transfers more easily and quickly through materials with higher thermal conductivity.
The ability of a material to transfer heat or electric current is call what?
The ability of a material to transfer heat is called thermal conductivity, while the ability to transfer an electric current is known as electrical conductivity.
What two things does heat depend on?
Heat depends on the temperature difference between two objects and the thermal conductivity of the materials involved.
How can one determine the thermal conductivity of a material?
The thermal conductivity of a material can be determined by conducting a thermal conductivity test, which involves measuring the rate at which heat flows through the material. This test typically involves applying a heat source to one side of the material and measuring the temperature difference across the material to calculate its thermal conductivity.
What is the unit for thermal conductivity and how is it measured in materials?
The unit for thermal conductivity is watts per meter-kelvin (W/mK). It is measured by conducting a heat flow through a material and measuring the temperature difference across it. The rate of heat transfer divided by the temperature difference and the material's thickness gives the thermal conductivity value.
Thermal conductivity in a sentence?
Thermal conductivity is the property of a material to conduct heat and is defined as the rate at which heat passes through a unit area of the material for a given temperature difference.
What is the difference between thermal diffusivity and thermal conductivity, and how do they affect the heat transfer properties of a material?
Thermal diffusivity measures how quickly heat can spread through a material, while thermal conductivity measures how well a material can conduct heat. A material with high thermal diffusivity can quickly distribute heat, while a material with high thermal conductivity can efficiently transfer heat. Both properties affect how a material responds to changes in temperature and how heat is transferred within it.
Define thermal conductivity?
Thermal conductivity is a material property that describes the ability of a material to conduct heat. It is defined as the rate at which heat is transferred through a material per unit of thickness, area, and temperature difference. Materials with high thermal conductivity transfer heat more efficiently than materials with low thermal conductivity.
