Uploaded July 2026 | Updated September 2026, 3 weeks ago
This 3D animation introduces Lenz’s Law and Faraday’s Law of electromagnetic induction, showing how changing magnetic flux induces an electromotive force (EMF) in a conducting loop.
The animation explores three key cases:
• Increasing magnetic field strength
• Decreasing magnetic field strength
• Changing orientation of a rotating coil
In each case, a changing magnetic flux induces a current whose magnetic field opposes the change that created it. This is the central idea of Lenz’s Law.
The animation also includes graphs of magnetic flux and EMF versus time, illustrating the relationship:
EMF = -N (dΦ/dt)
These graphs show how the induced EMF depends on the rate of change of magnetic flux, reinforcing the connection between physical intuition and mathematical description.
This video is designed for calculus-based introductory physics courses, but it may also be useful for algebra-based courses when focusing on conceptual understanding.
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Accessible Alternative Media (full narrative text) available, link is on the YouTube card at the beginning of the video.
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Topics covered:
• Magnetic flux (Φ = ∫B · dA)
• Faraday’s Law of induction
• Lenz’s Law (direction of induced current)
• Relationship between EMF and rate of change of flux
• Induced magnetic fields and dipole fields
• Rotating coils and the basis of generators
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Created for physics instruction and classroom use.
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Tags: Lenz's Law, Faraday's Law, electromagnetic induction, magnetic flux, induced EMF, electromotive force, physics animation, Faraday law animation, Lenz law animation, changing magnetic flux, induced current loop, flux vs time graph, emf vs time graph, calculus based physics, college physics, AP Physics, physics visualization, electric generator principle
This 3D animation introduces Lenz’s Law and Faraday’s Law of electromagnetic induction, showing how changing magnetic flux induces an electromotive force (EMF) in a conducting loop.
The animation explores three key cases:
• Increasing magnetic field strength
• Decreasing magnetic field strength
• Changing orientation of a rotating coil
In each case, a changing magnetic flux induces a current whose magnetic field opposes the change that created it. This is the central idea of Lenz’s Law.
The animation also includes graphs of magnetic flux and EMF versus time, illustrating the relationship:
EMF = -N (dΦ/dt)
These graphs show how the induced EMF depends on the rate of change of magnetic flux, reinforcing the connection between physical intuition and mathematical description.
This video is designed for calculus-based introductory physics courses, but it may also be useful for algebra-based courses when focusing on conceptual understanding.
---
Accessible Alternative Media (full narrative text) available, link is on the YouTube card at the beginning of the video.
---
Topics covered:
• Magnetic flux (Φ = ∫B · dA)
• Faraday’s Law of induction
• Lenz’s Law (direction of induced current)
• Relationship between EMF and rate of change of flux
• Induced magnetic fields and dipole fields
• Rotating coils and the basis of generators
---
Created for physics instruction and classroom use.
---
Tags: Lenz's Law, Faraday's Law, electromagnetic induction, magnetic flux, induced EMF, electromotive force, physics animation, Faraday law animation, Lenz law animation, changing magnetic flux, induced current loop, flux vs time graph, emf vs time graph, calculus based physics, college physics, AP Physics, physics visualization, electric generator principle
