AP Physics C: Electricity and Magnetism / Unit 13: Electromagnetic Induction
13.1 Magnetic Flux
Notes
$$\Phi_B=\int\vec B\cdot d\vec A$$
- Uniform field: $\Phi_B=BA\cos\theta$. Unit: weber (T·m²).
Practice
$B=0.4$ T perpendicular through 0.5 m². Flux:
$BA$.
Rotating a loop until its plane is parallel to $B$ makes the flux:
Normal is perpendicular to $B$.
Magnetic flux can change by changing:
Any of the three.
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