Lenz's law states that the induced current direction is such that it:

1. Lenz's law: induced current OPPOSES the change in magnetic flux producing it. 2. This is a consequence of energy conservation — otherwise we'd build a perpetual-motion device. 3. The minus sign in Faraday's law mathematically encodes Lenz's law. _Source: syllabus Physics Ch 6 §6.5 Lenz's Law_