Question

what is Heat current? Write the expression of it?
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Answer 1

AnSwer:-

A heat current is a kinetic exchange rate between molecules, relative to the material in which the kinesis occurs. It is defined as {\displaystyle {\frac {dQ}{dt}}} \frac{dQ}{dt}, where {\displaystyle Q} Q is heat and {\displaystyle t} t is time.

For conduction, heat current is defined by Fourier's law as.

Answer 2

The heat current is the rate at which heat is transferred over time. Because it is a rate of heat energy over time, the SI unit of heat current is joule per second, or watt (W).

The heat current is the rate at which heat is transferred over time. Because it is a rate of heat energy over time, the SI unit of heat current is joule per second, or watt (W).Heat flows through material objects through the conduction, with heated particles imparting their energy to neighboring particles. Scientists studied the flow of heat through materials well before they even knew that the materials were made up atoms, and heat current is one of the concepts that was helpful in this regard. Even today, though we understand heat transfer to be related to the movement of individual atoms, in most situations it is impractical and unhelpful to try to think of the situation in that way, and stepping back to treat the object on a larger scale is the most appropriate way to study or predict the movement of heat.

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