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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What is the total charge Q of 1 m³ of copper?
I was wondering if I can calculate the total charge Q of 1 m3 of copper, see my calculation in the picture below. Is this correct?
The correct solution (thanks to the community in the comments below):...
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Reasoning behind the density of free electrons/holes being constant with respect to volume of a semiconductor material
Consider a silicon semiconductor material which is having a cuboid shape of dimensions \$2\times 2\times 1\ \mathrm{cc}\$, suppose the atomic density of silicon is \$10^{22}/\mathrm{cc}\$, so in all ...
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How do receiver circuits differentiate between carrier/signal waves?
I've been told and shown that a receiving antenna will pretty much pick up any signals around itself. You can then filter out the frequency you want in order to do something with it.
What I don't ...
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Can electron microscopes record video of electricity?
Since electron microscopes capture electrons, can they be used to capture electrons moving in a circuit, and have they been used for this?
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Conventional current and electron flow in Arduino
On an Arduino there are some pins named GND, some are 5 V, and so on. If electrons flow from the negative to the positive terminal, then does this mean that they are flowing from GND to one of the ...
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Fermi level of metal
Do metals have fermi level? As we know conduction band and valence band are overlaped for a metal. Does it make any sense for metals to have fermi level?
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Can very small currents be accurately measured using only standard analog electronic components on an IC? [closed]
Let's say, for example, that I have a photodiode, which produces electrons in response to the amount of light.
What is the theoretical lower limit that can be accurately measured only using basic ...
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Is it possible to force charges into one plate of a capacitor?
As we know, a capacitor stores energy, but the net amount of charge in it doesn't change. If an electron enters one plate, another leaves the other plate. If the other plate is floating, the entering ...
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Why don't most electrons hit the anode in a cathode ray tube or electron gun?
In a cathode ray tube or electron gun, electrons liberated from the cathode by thermal emission accelerate towards a ring-shaped anode, from the potential difference between cathode and anode.
If an ...
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Do electrons flow from higher to lower or lower to higher potential?
I have seen countless sites saying electrons flow from higher potential to lower potential, but then again I have seen many saying that electrons flow from lower potential to higher.
I have always ...
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Are vehicle electrical components powered from the negative side?
still trying to get my head around electron flow as opposed to conventional current regarding automotive electrical circuits. There seems to be a ton of conflicting information/advice out there so I'm ...
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How is current the derivative of charge
If electric current is the time rate of CHANGE of charge. Then if I have a DC fixed current flowing into a resistor, same amount of charge is always flowing to that resistor, hence the derivative of ...
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The probability that an electron occupies the fermi level at 0K
I was trying to find the probability that an electron occupies the Fermi level at 0K.
Fermi function: {exp[(E-Ef)/kT] + 1}-1;
(k = 8.314 J/mol/K)
According to my calculations, the answer would be 0.5.
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3 Phase Motor to DC Output
In a standard car alternator there is are 3 diodes that keep each of the phases from ever pulling electrons.
There is then a capacitor to smoothens it all out.
However how is it possible that the ...
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KCL when rate of electron flow is given ; To include electron sign or not
Q) We have to determine the I. Magnitude of electron charge is 1.6 x 10^-19C.
I have fundamental confusion in this problem. Should we consider the negative charge of electron while doing the problem. ...
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