Faraday's Law Calculator

Calculate the induced electromotive force (EMF) from a changing magnetic flux.

Induction Parameters

Number of Turns (N)

Change in Flux (ΔΦ) (Webers (Wb))

Change in Time (Δt) (Seconds (s))

Induced EMF

Enter turns, flux change, and time duration

About this calculator

Quick Reference

EMF (ε)Electromotive Force (Induced Voltage)

NNumber of wire turns

Φ (Magnetic Flux)Field strength × perpendicular area

WebersSI unit of magnetic flux

Overview

Faraday's Law of Induction states that any change in the magnetic environment of a coil of wire will cause a voltage (EMF) to be induced in the coil.

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Pro Tips

Fun Facts

"This principle is how power plants generate electricity using spinning turbines and magnets."
"Electric guitars use Faraday's law: vibrating steel strings change the magnetic flux through 'pickups'."
"Wireless charging pads use induction to transfer energy to your phone."

Formula: ε = -N * (ΔΦ / Δt)