Weber

Definition

The weber (Wb) is the SI unit of magnetic flux, representing the quantity of magnetism. One weber is equal to one tesla meter squared ($1 \, \text{Wb} = 1 \, \text{T} \cdot m^2$).

5 Must Know Facts For Your Next Test

1. One weber is equivalent to $10^8$ maxwells.
2. The weber is used to quantify the total magnetic field passing through a given area.
3. Faraday’s Law of Electromagnetic Induction states that a change in magnetic flux over time induces an electromotive force (EMF).
4. Magnetic flux ($\Phi$) can be calculated using the formula $\Phi = B \cdot A \cdot \cos(\theta)$, where $B$ is the magnetic field strength, $A$ is the area, and $\theta$ is the angle between the magnetic field and normal to the surface.
5. In practical applications, webers help in understanding how transformers and electric generators work.

Review Questions

• What does one weber represent in terms of tesla and meter squared?
• How does Faraday's Law relate to changes in magnetic flux measured in webers?
• What factors affect the calculation of magnetic flux in webers?

Related terms

Magnetic Flux: A measure of the quantity of magnetism, considering both the strength and extent of a magnetic field.

Tesla: The SI unit of magnetic field strength or magnetic flux density ($1 \, \text{T} = 1 \, \frac{\text{Wb}}{\text{m}^2}$).

Faraday's Law: $\text{The law stating that a change in magnetic flux through a circuit induces an electromotive force (EMF) proportional to the rate of change}$.