The SI unit of magnetic flux named after Wilhelm Eduard Weber is the weber. Its symbol is Wb, and it is a derived unit in the International System of Units.
The weber is closely tied to Faraday’s law of electromagnetic induction. A changing magnetic flux of one weber per second induces an electromotive force of one volt, giving the relationship Wb = V·s. It can also be expressed as one tesla-square metre.
Wilhelm Eduard Weber was a German physicist who lived from 1804 to 1891 and studied electromagnetism. The unit’s name honours his work in magnetic measurement. The weber was formally recommended as a practical unit of magnetic flux in 1935 during the development of internationally unified electrical units.
A common mix-up is with the tesla: the tesla measures magnetic flux density, while the weber measures total magnetic flux. The henry is the unit of inductance, and the farad measures capacitance.