Questions tagged [electron]
Anything related to the behavior and properties of electrons, i.e. the elementary subatomic particles accounting for electrical conduction in most solid materials, especially metals.
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Electrons flow in Li-ion Battery
I’m new to electricity, and I’ve got a question about electrons flow inside a Li-on battery. A lot of articles and videos show us only Li+ ion flows from anode to cathode through electrolyte during ...
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How do I make a “directed” spark gap?
(Originally asked on engineering StackExchange, I was directed to ask it here)
For a project, I need to create a spark gap that only triggers when there is a conducting material between the 2 contacts....
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How does a single phase shared neutral circuit actually work, physically?
Okay so this is a two part question. First Question is probably more of an ELI5 question. But I am a fairly experienced electrician (NOT AN ENGINEER mind you.) but I have a generally good working ...
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How can electrons in a tungsten filament release infrared light photons?
I have a question regarding electric circuits, specifically when it comes to converting electromagnetic energy into light in a light bulb (tungsten)filament. How can an electron in a tungsten atom of ...
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Mobility of electrons vs holes in semiconductors (intrinsic vs extrinsic)
I was reading my class notes and it was written that electrons are more mobile than holes because the effective mass of electrons are lower than that of holes. (μ=eτ/m*)
I checked online to find the ...
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What does the fermi-level increase in reverse-bias?
Fermi-level tells us the probability of finding an electron at 50%. When you look at an energy band diagram in reverse-bias you can see the Fermi-level increases in the p-type semi-conductor. Why does ...
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In an energy band diagram why is the valance band in the p-type have more energy then n-type?
I am having trouble understanding energy band diagrams. In an energy band diagram of a semi-conductor during equilibrium the valence band of the p-type is higher then n-type meaning electrons in the ...
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Why does a p-type conduction band have higher energy then n-type conduction band in a p-n junction?
In an energy band diagram that represents the p-n junction (during equilibrium) the p-type conduction band has greater energy then an n-type conduction band. Why does the p-type have greater energy ...
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Geometric information within 1D streams of electrons/photons
How is light—or actually any frequency in the EM spectrum—self-encoding and self-modulating 3D info in its 1D self, so that it “knows,” once it strikes a surface, to discharge all the data perfectly ...
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60 GHz radiation
I have always gotten great answers on this site so I thought I'd give this one a shot. In looking into 5G technology, I found that it radiates at 60 GHz, which apparently is in the oxygen absorption ...
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Why Protons travel through the membrance but electrons travel through the wire?
In the case of having two electrodes (anode and cathode). I will always hear that positive ions will jump from one electrode to the other causing the electricity to flow the wire. How come only ...
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What actually happens to electrons in a circuit when work is done at a component?
As the title. Between when voltage is higher; before the electrons reach the component, and afterwards.
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What are the typical paths of holes and electrons in an unbiased PN junction?
Can anyone tell me the typical paths of holes and electrons in an unbiased PN junction at equilibrium? In terms of diffusion currents, is that only holes (majority carriers in the the P-Type) ...
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logic gates. What makes it what it is? [closed]
Does anyone know what it is about each logic gate that makes it "and, or not xand, etc." like, is it a different shape, therefore causing electrons to go different places when a charge is ...
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Does hole concentration fall below the intrinsic concentration, if Si is doped with pentavalent impurities?
If we increase N type doping in a pure Silicon then according to the equation
$$P_n=\frac{n_i^2}{N_D}\text.$$
Then mathematically, hole concentration is less than \$n_i\$, if \$N_D>n_i\$.
Why does ...
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