🔬 Beyond the Loop — Flux in Motion

Faraday’s law does not need a magnet or a textbook loop. See induction driven by a current-carrying wire, and by a single moving charge.

Every tab here is the same underlying law: emf = −N·dΦ/dt. What differs each time is WHICH factor in Φ = N·B·A·cosθ is doing the changing — B, A, θ, or N itself.

What is this?

Apparatus — drag the highlighted parts

Flux Φ through the circuit — is it changing?

Induced EMF — Lenz's law in action

Which way does the current actually flow?

Live calculation