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Hi all! I know that this might be a stupid question, but I am very confused about a particular aspect of the electric field. I have seen these equations:
E=-∇V and E=-∇V-∂A/∂t
Could you guys explain how the electric field can be explained with or without -∂A/∂t
E=-∇V and E=-∇V-∂A/∂t
Could you guys explain how the electric field can be explained with or without -∂A/∂t