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Faraday's Law of Induction Laboratory

Dynamic Magnetic Flux Rate of Change

Laboratory Sliders

Set Parameters

4.0 s
0.50 T
1.50 m
Manual Position (θ)

Faraday's Discovery

An electromotive force (EMF) is induced not by the presence of flux, but explicitly by its time rate of change. Notice how EMF peaks precisely when the flux graph crosses zero.

Physical Generator Loop
Magnetic Flux Window (ΦB vs t)
Induced electromotive force (EMF vs t)

Theoretical Formulations

Induced EMF acts as the negative first derivative of the magnetic flux function with respect to time.

ΦB = B A cos(θ)
EMF = -dΦB/dt = B A ω sin(θ)

Live Quantitative Tracking

System Constants
A = π · r² = 7.07 m²
ω = 2π / T = 1.57 rad/s
Current State Parameters
Angle (θ) =
Time (t) = 0.00 s
Flux (ΦB) = 3.54 Wb
Induced EMF = 0.00 V