Electric Field over an infinite sheet

Thread starter VitaX
Start date Mar 8, 2011
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Electric Electric field Field Infinite

AI Thread Summary

The discussion focuses on calculating the electric field over an infinite sheet and a charged disk. The relevant equations for the electric field are provided, specifically E = σ/2ε0 for the infinite sheet and a modified equation for the charged disk. The method proposed involves subtracting the electric field contributions from both the infinite sheet and the disk at a specific point. The approach is confirmed as correct, affirming that the independent fields can be combined in this manner. This method effectively addresses the problem of determining the net electric field at point P.

Mar 8, 2011

VitaX

Homework Statement

Homework Equations

E = σ/2ε₀ (infinite sheet)
E = σ/2ε₀(1 - z/(z^2 + R^2)^1/2) (charged disk)

The Attempt at a Solution

Is this the correct method below?

E = σ/2ε₀ (infinite sheet) - [σ/2ε₀(1 - z/(z^2 + R^2)^1/2)]

Last edited: Mar 9, 2011

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Mar 9, 2011

supratim1

Gold Member

yes...just subtract the independent fields due to infinite plane and the disc at point P. your expression is alright.

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