Frequently Asked Questions
What is Faraday's law?
EMF = -N·dΦ/dt. The induced EMF in a coil equals the rate of change of magnetic flux, times the number of turns, with a sign from Lenz's law.
What is a weber?
The SI unit of magnetic flux: 1 Wb = 1 T·m² = 1 V·s.
Why does AC work?
Rotating a coil in a magnetic field continuously changes its flux, inducing alternating EMF. That's how generators produce grid power.
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