Electric Field Due to an Infinite Sheet of Charge and Parallel Plate Capacitor

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Physics Ninja looks at the application of Gauss's Law to find the magnitude of the electric field produced by an infinite sheet of charge.
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This is great video! Clear all of my blur concept! Thank you❤

ufjhbzj
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Doesnt the electric field due to a line charge depend on the distance from the line? Seems like the answer should depend on the height above the sheet.

inGuy
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Thank you so much for your explanation. It is very clear, however, which I don't understand in the second example (two oppositely charged plate): The total electric field is E1 + E2, with E=sigma/2Eo. BUT isnt sigma of the second electric field negative and so if we did the sum of them, it would equal to zero ?
I hope I make myself clear.. I see that we only make the sum of the magnitude.. but I don't understand why we don't respect the polarity of the charge density.
Any help would be greatly appreciated :) thank you so much!

lrssmr
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Sir why whole charge on the sheet is not included in cylindrical gaussian figure just a part of sheet, the formula is (total charge enclosed/epsilon)

Radon.........