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In classical physics, time and velocity change sign under time-reversal while position, acceleration and force do not. An accelerating particle going to the right becomes a decelerating particle going to the left.

In a simple current loop, imagining electrons with a constant drift velocity from $-$ pole towards $+$ pole after time-reversal we have the same electrons moving with the opposite drift velocity from $+$ pole towards $-$ pole. It seems like a new law in physics, but how would you explain that time-reversal in this situation does not violate any law of physics?

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Originally the battery is de-charging and chemical energy is transformed into electromagnetic energy. After time-reversal the battery is charging and electromagnetic energy is transformed into chemical energy. Sorry for unintentionally answering my own question. Maybe delete the question?

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  • $\begingroup$ Answering your own question is an accepted use of this platform. $\endgroup$
    – Gilbert
    Commented Dec 2, 2021 at 18:34

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