I understand the first one because for the given point in the center, the vectors are all pointing away. But part B and part C look almost entirely similar to me. Could someone help me understand why the image in part B is not divergent yet the image in part C is divergent?
2026-03-27 03:41:45.1774582905
Help understanding why the image in part B does not diverge, yet the one in part C does
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The vector field in part B is constant, so certainly has divergence $0$. Because the length of the vector field in part C increases as you move upwards, you will get positive flux across a rectangle with its sides parallel to the axes (more flows out across the top than flows in across the bottom).