I have some questions about divergence in electromagnetism. Could you answer them for me? I will also attach the image so you can know the meaning of each symbol. Thank you.
2.14 Does ∇.A = 0 at a point in space directly mean A = 0 at the point? 2.18 Is ∇.D useful for checking the presence of a discrete source other than the distributed source or sink? If not, how can you detect a point source? enter image description here
