Faraday induction: a moving magnet drives an EMF in a coil
Magnet distance
120
Magnet strength
1.0
Turns N
50
Auto-move
Reset
Magnet & coil (Lenz's law)
Drag the distance slider: the EMF spikes only while the flux is
changing
. Hold still and it goes to zero.
Induced EMF & flux vs time
Blue: flux Φ through the coil. Red: induced EMF ε = −N dΦ/dt.