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Weber (symbol: Wb) is a SI derived unit of magnetic flux, equal to the flux linking a circuit of one turn that produces an electromotive force of one volt when reduced uniformly to zero in one second.
The dimensions for webers are, in derived units, volt-seconds (V·s). In SI base units, they are kg·m2·s−2·A−1.
It is named after the German physicist Wilhelm Eduard Weber (1804 - 1891).