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Introduction
In a previous Insight, A New Interpretation of Dr. Walter Lewin’s Paradox, I introduced the fact that there are two kinds of E fields. One (Em) is generated whenever a source of emf is produced. The other (Es) is the electrostatic field. The Es field always terminates on free charges; the Em does not. Es is a conservative field like gravity; Em is not. ## \nabla x \mathbf Em ## is always non-zero somewhere.
My intent is to reveal the existence of the two fields in a number of situations and, more importantly, show that in most cases this approach is the only acceptable one if conflict with established physical laws is to be avoided.
The Start
The total electric field ## \mathbf {E = Em + Es} ##.
We define an electric field E as the force F on a stationary charge: ## \mathbf E = \mathbf F/q ## with q ## \rightarrow 0 ##. By this defnition,all Em and Es in all of...
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