Magnetic Flux

📊 beginner

$$\Phi_B = BA \cos \theta$$

A measure of the total magnetic field passing through a given surface area.

Variables & Units

$\Phi_B$

Magnetic Flux

Unit: Weber ($Wb$)

$A$

Area

Unit: $m^2$

$\theta$

Angle between $B$ and normal to surface

Unit: Degrees/Radians

Key Information

📐 Derived From

Surface integral of the magnetic field.

💡 Example

Flux through a loop in a uniform magnetic field.

🔧 Applications

Transformers and electric motors.

⚠️ Constraints

Assumes uniform magnetic field across the area.

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