The figure on the right shows four Gaussian surfaces consisting of identical cyl

Question

The figure on the right shows four Gaussian surfaces consisting of identical cylindrical midsections but different end caps. The surfaces are in a uniform electric field that is directed parallel to the central axis of each cylindrical midsection. The end caps have these shapes: S1,convex hemispheres; S2, concave hemispheres;S3, cones; S4, flat disks. Rank the surfaces according to (a) the net electric flux through them (b) the electric flux through the top end caps, greatest first. Explain your answer

Explanation / Answer

a) net electric flux = 0

b) flux through each face is same

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