electromagnetism

Faraday's Law of Induction

Swing a magnet through a 3D coil and watch the induced EMF. Spin an AC generator rotor and see the sinusoidal output voltage. Understand magnetic flux, flux linkage, and Lenz's Law.

Faraday's Law

A-Level

Faraday's Law states that the induced EMF in a circuit equals the rate of change of magnetic flux linkage. Lenz's Law adds that the induced current opposes the change that caused it. Together they explain generators, transformers, and induction.

Magnet Speed2.0m/s

Coil Turns10

Coil Area0.0m²

📐 Formulas

\mathcal{E} = -N\frac{d\Phi}{dt}Induced EMF

\Phi = BA\cos\thetaFlux through a surface

N\PhiTotal flux through N turns

📋 Syllabus

AQA3.7.5.4

EdexcelTopic 7