Lenz's Law states that the direction of an induced electric current will always oppose the change that created it. This means that if a magnetic field increases in strength, the induced current will flow in a direction that creates a magnetic field opposing that increase. Conversely, if the magnetic field decreases, the induced current will flow to support the existing field. This principle is a consequence of the conservation of energy. By opposing changes, Lenz's Law ensures that energy is not created or destroyed in the process of induction. This law is fundamental in understanding how devices like electric generators and transformers operate.