Making/Inducing/Forming a current

[max1546]

Is it possible to induce a current with just heating?
i.e. if we have metal rods (conducting/non-conducting rods) and a heat source, can we make current and determine the direction and amount of current (if possible in relation to the heat energy)?

 

[Wiemster]

Google "thermocouple"

 

[astrokreng]

Yes, it is possible to induce a current through heating, a phenomenon known as thermoelectricity. When two dissimilar conductors are connected at two junctions and one junction is heated, a temperature difference is created, causing a flow of electrons from the hot junction to the cold junction. This flow of electrons creates a current.

The direction and amount of current can be determined by the Seebeck effect, which is the measurement of the voltage generated by the temperature difference between the two junctions. The amount of current produced depends on the temperature difference, the type of conductors used, and the length and thickness of the conductors.

Thermoelectricity has been used in various applications, such as thermoelectric generators, which convert heat directly into electricity, and thermocouples, which are used to measure temperature. However, the efficiency of thermoelectric devices is currently low, and further research is being conducted to improve their performance.

In conclusion, it is possible to induce a current through heating, and the direction and amount of current can be determined through the Seebeck effect. This phenomenon has various practical applications, but further advancements are needed to improve its efficiency.