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physics-handbook/units/em/unit-13.tex
2026-04-29 21:21:22 -05:00

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\section{Electromagnetic Induction}
This unit introduces the phenomena where changing magnetic conditions produce electric effects. In AP Physics C: Electricity and Magnetism, the core ideas begin with magnetic flux — a scalar measure of how much magnetic field penetrates a surface — and then culminate in Faraday's law, which quantifies how a time-varying magnetic flux induces an electromotive force. These concepts are the gateway from electrostatics to the full unification of electricity and magnetism.
The flow starts with magnetic flux and Faraday's law, then addresses the direction of induced currents through Lenz's law. From there, the unit covers motional emf (emf generated by conductors moving through a field), inductance and the magnetic energy stored in fields, and finally the transient behavior of LR circuits and the harmonic oscillations of LC circuits.
\input{concepts/em/u13/e13-1-magnetic-flux.tex}
\input{concepts/em/u13/e13-2-faraday.tex}
\input{concepts/em/u13/e13-3-lenz.tex}
\input{concepts/em/u13/e13-4-motional-emf.tex}
\input{concepts/em/u13/e13-5-inductance.tex}
\input{concepts/em/u13/e13-6-lr-circuits.tex}
\input{concepts/em/u13/e13-7-lc-circuits.tex}