Electrons flow in thermionic emmission?

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    Electrons Flow
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SUMMARY

Continuous electron flow in thermionic emission requires a high positive potential and low gas pressure. Electrons, being significantly lighter than air molecules, are impeded by air, necessitating a vacuum or low-pressure environment for effective flow. In thermionic emission, heat energy is converted into kinetic energy, facilitating the movement of electrons and the generation of current.

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Explain that to cause a continuous flow of elctrons requires high positive potential and less gass pressure?
Can anyone answer this please
 
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Hi,
If you want electrons to flow, you need vacuum or gas at low pressure. this is because, electrons are extremely light, relative to air molecules. The air atoms or molecules stop them. The high positive potential attracts the electrons and accelerates them, causing a flow of current.
But why are you asking this under the title "thermionic emission"?
In thermionic emission, electrons gain energy due to heat. This energy is transformed into Kinetic energy, causing the electron flow.
 

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