Total lorentz force does not work, but its component may do so.

总洛仑兹力不作功，但洛仑兹力分力作功。

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To answer the question whether Lorentz force does work or not in the case of electromotive force, it is proved that Lorentz force does no work in electromotive force.

针对动生电动势等于洛仑兹力所作的功的问题，定量证明在动生电动势中洛仑兹力并不作功，并得出洛仑兹力永不作功的结论．。

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