Weber

The SI derived unit of magnetic flux, equal to one volt-second. One weber is the flux through a loop that induces one volt when the flux changes uniformly to zero in one second.

Magnetic flux: A measure of the magnetic field passing through a specified surface. The weber is the SI unit used to quantify magnetic flux.
Faraday's law of induction: A law stating that induced electromotive force equals the negative rate of change of magnetic flux. It links a flux change in webers per second to induced volts.
Fluxmeter: An instrument that measures changes in magnetic flux through a coil. Its readings quantify flux changes in webers.
Wilhelm Eduard Weber: A German physicist who studied electricity and magnetism and helped establish absolute electrical measurements. The magnetic-flux unit is named in his honor.
Tesla: The SI unit of magnetic flux density, equal to one weber per square metre. The tesla measures flux per area, unlike the weber’s total flux.
Magnetic field: A vector field that describes magnetic forces and their direction and strength at each point. Magnetic flux depends on the field crossing a surface.
Lenz's law: The induced current from changing magnetic flux opposes the change that produced it. Its minus sign gives physical direction to Faraday’s flux-voltage relation.
Magnetic circuit: A model of magnetic flux flowing through paths formed by magnetic materials and gaps. Magnetic-circuit calculations track flux using the weber.
International System of Units: The internationally standardized system of measurement units used in science, technology, and trade. The weber is one of the SI derived units.
Henry: The SI derived unit of inductance, equal to one weber per ampere. The henry connects flux linkage to current rather than defining flux alone.

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InductanceRelated: Flux linkage measured in webers enters the definition of inductance.