eddy currents

liv

how do eddy current brakes work?

I know they are a 'swirl' of current that is induced into a conducting solid mass. And the current creates a magnetic field that opposes the change ... and Lenz's law etc...doesn't need to be an elaborate explanation...just a simple one's cool...

they are often found on semi-trailers....are they better than other brakes? if so, why?

ta,
have a good one

Liv

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