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Electric field above surfaces. See attached file for full problem description.
1. find the electric field a distance z above one end of a straight line segment of length L, which carries a uniform line charge lamda.
check that you formula is constistent with what you would expect for the case z >>L.

2. Find the electric field a distance z above the center of a flat circular disk of radius R, which carreis a uniform surface charge.
What does your formula give in the limit R --> infinity? Also check the ase z >>R.

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It shows how to calculate the electric fields of above line segment and circular disk, respectively. The solution is detailed and well organized.

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