Re: [Phys-L] Lenz's law and conservation of energy

["Dr. Keith S. Taber" <kst24@cam.ac.uk>]

Would (a) be a better answer?

Keith


> Hi,
>
> I saw an exam question (actually a specimen paper question) which asked:
>
> Lenz's law is a consequence of the following concervation principle:
>
> a) momentum
> b) charge
> c) current
> d) energy.
>
> Naturally, the only choice making sense is d). However, is it really 
> so that Lenz's law is *consequence* of conservation of energy from 
> the poiint of view em-theory? I would rather say that Lenz's law is 
> consistent with conservation of energy (well, what wouldn't be :-)).
>
> Any ideas?
>
> Regards,
>
> Antti
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Dr. Keith S. Taber

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