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12.5 Electromagnetic Induction

Part of Magnetism and Electromagnetism in AP® Physics 2: Algebra-Based. Read the opening section, then create a free account for the full interactive lesson, practice, and progress tracking.

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Magnetic Flux

Magnetic Flux is a quantity that describes the amount of magnetic field that is going perpendicularly through a certain area. When you have a 2D surface, the area vector will be pointing perpendicularly outward to that 2D surface. So a thin plate in the x and y-axes will have an area vector in the z-axis. Magnetic Flux is a scalar, measured in Webers (Wb), and is represented with the variable

{\Phi_B}

\Phi_B=BAcos(\theta)

${\Phi_B}$ is the magnetic flux through a 2D surface area
${B}$ is the magnetic field going through the 2D surface
${A}$ is the area of the surface
${\theta}$ is the angle between the magnetic field vector and the area vector

In this unit

5 lessons

12.1Magnetic FieldsPreview lesson
12.2Moving ChargesPreview lesson
12.3Magnetic ForcePreview lesson
12.4Current-Carrying WiresPreview lesson
12.5Electromagnetic InductionThis lesson

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