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Picture a conducting loop and a bar magnet. When the bar magnet is brought near the loop, the magnetic flux through the loop changes and induces a current in the loop to resist the change in flux.

The current in the loop is generating a flux in the opposite direction, so therefore the net flux must now be lower, so why does Faraday's law only take into account the external flux?

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  • $\begingroup$ What I think Faraday nor fully explain the whole thing which result of induce emf, there is also case of self induction, which nothing but back emf not explain by the Faraday. $\endgroup$
    – Jack Rod
    Oct 30, 2019 at 13:33

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