Find the Electric flux passing through infinite strip of small width h at a distance d (d>>h) from point charge q.
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Please find below the solution to the asked query:
Here, we can consider the gaussian surface as a rectangular pipe of infinite length and the width of each side is 2d in width as shown in the figure.
Then according to the gauss law, one fourth of the total flux passes through each of the faces. Therefore,
Here, the width of the side is 2d and width of the strip is h. Therefore, the flux passing through strip is,
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