
Why / how do electric arcs form? - Physics Stack Exchange
Apr 5, 2017 · An electric arc is often formed by two electrodes coming together, creating a lot of heat and then the electrodes being separated to form a small gap in which the arc is formed. …
What is the difference between electric spark and electric arc?
Nov 22, 2020 · Unlike the spark, the ionized conductive channel in the arc can then survive even short drops in power input, like those occuring each 10 ms in AC network or cheap transformer …
Formula for Electrical Arc Length - Physics Stack Exchange
Jul 29, 2014 · The resistivity of the medium in the traditional sense (the cold matter resistivity) doesn't matter. Once you have the arc, what matters is the plasma resistivity which depends …
Is there some general limit on temperature of electric arc?
Feb 24, 2020 · You can find that max. temperature of electric arc is ~20 000 K (e.g. in lightning), but why? I assume temperature of electric arc is given by balance between input power …
What is the working principle of electric arc lighters?
Dec 18, 2017 · the crossed-arc trick is a way of stabilizing the formation of the arc. this was learned over 100 years ago when arcs were used in a primitive radio transmitter called a spark …
What is the equation for the electrical arc length of an arc that has ...
Dec 2, 2018 · I am curious and haven’t found any equation to calculate the electrical arc distance that is drawn after striking an arc by touching the two contacts and pulling the two contacts …
electricity - Electric arc and electric spark differences? - Physics ...
Nov 24, 2020 · Electric arc and electric spark differences? [duplicate] Ask Question Asked 4 years, 4 months ago. ...
electricity - Why do electric sparks appear blue/purple? - Physics ...
May 27, 2015 · Electric sparks tend to appear blue or purple or white in color. Why?
What is the speed of an electric spark/arc in vacuum?
There are no sparks/arcs in vacuum. Unless you get field emission, which requires very high charge densities i.e. either high voltages or very small structures on the emitting surface, there …
electromagnetism - How fast do electrons move in an electric arc ...
If you mean electric arc welding or plasma cut that depends on the surrounding gas temperature of magnetic fields if there is such provideing pinch effect on the arc. The electron velocity is 20 …