An infinite plane of charge with surface charge density
Chapter 23, Problem 23.86(choose chapter or problem)
An infinite plane of charge with surface charge density 3.2 mC/m2 has a 20-cm-diameter circular hole cut out of it. What is the electric field strength directly over the center of the hole at a distance of 12 cm? Hint: Can you create this charge distribution as a superposition of charge distributions for which you know the electric field?
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