Faraday’s Law Interactive
Drag the magnet past the coil. Changing magnetic flux induces an EMF: ε = −N · dΦ/dt.
Controls
200
0.12
0°
20
Advanced field model
0.30
0.18
Tip: Drag the magnet left/right. Press Enter to toggle play, Space to clear the plot, Esc to end dragging.
Scene
Magnetic Field B at coil
0.000 T
Flux Φ
0.0000 Wb
EMF ε
0.000 V
Current I
0.000 A
Sign convention: positive ε corresponds to increasing flux in the +z direction (right-hand rule). Lenz’s law opposes the change.
EMF vs Time
Plot shows the last ~10 seconds. Scale auto-adjusts.