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A point charge 60 microcoulomb is located in the origin. An infinite plane located at z=5. What is the electric flux in the plane due to the charge?

Q=60x10^-6 C at 0,0,0 (origin)

z=5 (plane)

Here, I consider the electric flux emanating from Q that passes through the z plane. Each radial electric field produced by the charge forms circle in the plane. I get the summation of each circle circumference's ratio with whole sphere to infinity.

But I got 1/(2xepsilon) times 60microcoulomb = 30/e(epsilon). I know I did not got the right answer cause the answer must be the half of the charge. Any Idea of solving the problem? help.

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# Homework Help: Electric Flux through an Infinite Plane

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