Physics - Electromagnetism - Lenz's law - Lenz's Law

A 4-step lesson. Step 1: 'Lenz's Law: The direction of the induced current is such that it OPPOSES the change in flux that causes it. This is the physical meaning of the negative sign in Faraday's law: ε = -NdΦ/dt.' Step 2: 'If flux is increasing (magnet approaching): Induced current creates a field