The colored regions in the figure below represent four three-dimensional Gaussian surfaces A through D. The regions may also contain three charged particles, with q1 = +4.60 nC, 92 = -4.60 nC, and q3 = +8.90 nC, that are nearby as shown. What is the electric flux through each of the four surfaces? Note: A charge is within a region if it is located inside the perimeter shown for that region. E, A = N. m2/c ФЕ, В 3 N m2/c ФЕ, С N.m?/c E,D N m2/C В A 93 D

The colored regions in the figure below represent four three-dimensional Gaussian surfaces A through D. The regions may also contain three charged particles, with q1 = +4.60 nC, 92 = -4.60 nC, and q3 = +8.90 nC, that are nearby as shown. What is the electric flux through each of the four surfaces? Note: A charge is within a region if it is located inside the perimeter shown for that region. E, A = N. m2/c ФЕ, В 3 N m2/c ФЕ, С N.m?/c E,D N m2/C В A 93 D

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I'm a little confused here. Why is E = (1/e0) *integral row dx? Isn't Integral(E dA) = Qenc/e0 = integral (row dV)/e0. I'm not sure if what you wrote follows from Gauss' Law. Where did you expression from for the junction potentional? I don't see it my book or anywhere else.
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