Question

how does electric field at a point change with distance r from an infinite thin sheet of charge ​

Answer 1

Answer:

In order to find the electric field at a point P1 on an infinite thin plane charge sheet of positive charge another point P2 is taken on the other side of the sheet, so that P1 and P2 are equidistant from the sheet. ... It is seen that the electric field is uniform and does not depend on the distance from the charge sheet.

Explanation:

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Answer 2

Answer:

Ans : E = σ/2ε₀

first understand what is difference between sheet and plate in electrostatic ?

sheet => both side charge

plate => one side charge

here , mentioned sheet , then surely charge will appear in both side of conductor .

now, Use the Gauss concept for finding electric field .

Let Q present in charged sheet conductor .

because , I clearify that both side charge presents in sheet .

so, each side charge share = Q/2

now, Gauss formula,

Φ = Qnet/2ε₀

here , Qnet at one side = Q/2

also we know, Φ { electric flux near the surface of sheet } = E{electric field near the surface} × A { cross section Area of gaussian surface is chosen by us }

so, EA = Q/2ε₀

E = Q/2Aε₀= {Q/A}/2ε

we know, Q/A = surface charge density = σ

E = σ/2ε₀

hence, electric field at a point near an infinite sheet of charged conductor is σ/2ε₀

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