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Faraday's Law of induction is often stated as "a change in magnetic fluxcauses an EMF"; or, more cautiously, "a change in magnetic flux is associatedwith an EMF"; It is as well that the more cautious form exists, because thefirst "causes" form is incompatible with the usual expression $V = - \partial_t\Phi$. This is not, however, to deny the causality as reasonably inferred fromexperimental observation - it is the equation for Faraday's Law of inductionwhich does not represent the claimed cause-and-effect relationship. Here Iinvestigate a selection of different approaches, trying to see how anexplicitly causal mathematical equation, which attempts to encapsulate the "achange in magnetic flux causes ..." idea, might arise.

Faraday's Law and Magnetic Induction: cause and effect, experiment and theory