INDUCTION METRICS
Magnetic Flux ($\Phi_B$)0.0 Wb
Induced EMF ($\varepsilon$)0.00 V
← Drag Magnet Horizontally →
■ Faraday's Law:
$\varepsilon = -N \frac{\Delta\Phi_B}{\Delta t}$
Voltage ($\varepsilon$) is ONLY generated when the magnetic flux ($\Phi_B = B \cdot A$) is changing. Simply placing the magnet inside the coils does nothing if it's stationary ($\Delta \Phi_B = 0$).
■ Lenz's Law (The minus sign):
Nature abhors a change in flux. The induced current creates a secondary $B$-field that opposes the motion of the magnet (e.g., acts like a North pole to repel an approaching North pole).
$\varepsilon = -N \frac{\Delta\Phi_B}{\Delta t}$
Voltage ($\varepsilon$) is ONLY generated when the magnetic flux ($\Phi_B = B \cdot A$) is changing. Simply placing the magnet inside the coils does nothing if it's stationary ($\Delta \Phi_B = 0$).
■ Lenz's Law (The minus sign):
Nature abhors a change in flux. The induced current creates a secondary $B$-field that opposes the motion of the magnet (e.g., acts like a North pole to repel an approaching North pole).