Lenz's law
Induced current's field opposes the flux change that caused it; ε = −NΔΦ/Δt, direction by Lenz.
Magnetism & inductionB-fields, Ampere force, Faraday/Lenz, and AC basics.
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Lenz's law
Lenz's law: induced EMF opposes flux change. This “Lenz's law” page is an MVP interactive sketch — formulas, controls, and live readouts in the browser; a fuller bench may follow.
Lenz's law: induced EMF opposes flux change.
Key formulas
\mathcal{E}=-L\frac{dI}{dt}\mathcal{E}=-N\frac{d\Phi}{dt}
How to use
- Adjust parameters in the left panel.
- Use play / pause and speed controls.
- Match right-side readouts to the formulas.
- Reset to return to the initial state.
Applications
- Lenz's law: Lenz's law: induced EMF opposes flux change.
- Classroom focus: ε = −NΔΦ/Δt, direction by Lenz.
FAQ
What does MVP mean on this page?
An interactive sketch with formulas and parameters. Polished Ready labs are the full bench experience.
What does the “Lenz's law” lab practice?
Tune parameters and match readouts to the “Lenz's law” relations — useful for prep and demos.
How do I find the Ampere force direction?
Left-hand rule: B into palm, fingers along I, thumb along F.
When is there an induced current?
When flux through a closed loop changes, or a conductor cuts field lines.