Faraday's Law of Electromagnetic Induction

Explore how a changing magnetic flux produces an induced EMF.

Faraday's Law

Faraday's law states that the induced electromotive force in a circuit is proportional to the rate of change of magnetic flux through the circuit.

ε = −N dΦ/dt

Magnetic Field Strength (B)

Magnetic Field: 50%

Number of Coil Turns

Turns: 10

Changing magnetic field through the coil produces induced EMF.

Induced current: Moderate

Calculate the induced EMF using:

ε = N × ΔΦ / Δt

Number of Turns (N) Change in Magnetic Flux (ΔΦ) in Weber Time Change (Δt) in seconds

Result will appear here.

Magnetic flux represents the amount of magnetic field passing through a given surface.

A changing magnetic flux produces an electromotive force in the conducting loop.

The induced current opposes the change in magnetic flux that produced it.

Faster changes in magnetic flux produce a larger induced EMF. Increasing the number of turns also increases the induced EMF.