Final answer:
Lenz's Law indicates the direction of the induced magnetic field and the direction of current flow in response to a change in magnetic flux, maintaining the conservation of energy.
Step-by-step explanation:
Lenz's Law tells the direction the magnetic field will point, and therefore, the direction the current will flow.
According to Lenz's Law, the induced electromotive force (emf) creates a current that flows in a direction such that the magnetic field it creates opposes the change in magnetic flux that induced the emf in the first place.
This is a consequence of conservation of energy and Faraday's law of induction. When applying Lenz's Law, we often use the right-hand rule: point your right thumb in the direction of the desired magnetic field inside the coil, and the direction in which your fingers curl will indicate the direction of the current flow.
This law ensures that the induced field, the current, and the polarity of the induced emf always act to counter the change that is causing the induction.