Lenz's Law

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Lenz's law gives direction of induced current such that it?

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1. **Lenz's Law Statement**: The direction of an induced current is such that it creates a magnetic field that **opposes** the change in magnetic flux that produced it.
2. **Formula**: $\epsilon = -\frac{d\Phi}{dt}$ (The negative sign represents Lenz's Law).
3. **Physical Basis**: This law is a consequence of the **Law of Conservation of Energy**. If it enhanced the change, energy would be created from nothing, leading to an infinite current loop.
4. **Application**: Moving a magnet toward a coil induces a current that creates a repelling magnetic pole.

Lenz's Law

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