What describes the phenomenon where induced currents produce expanding magnetic fields that oppose the original magnetic field?

The phenomenon where induced currents create expanding magnetic fields that oppose the original magnetic field is best described by Lenz's law. This law states that the direction of induced electromotive force (emf) and the resulting current will always be such that it opposes the change in magnetic flux that produced it. In other words, if there is a change in the magnetic field within a closed loop, the induced current will flow in a direction that creates a magnetic field opposing that change, helping to conserve energy.

This principle is crucial in understanding various applications of electromagnetism, such as in inductors and transformers, where changes in current lead to changes in magnetic fields and vice versa. Lenz's law is closely tied to the conservation of energy, ensuring that the induced current does not create energy out of nothing.

Faraday's law relates to the induced emf being proportional to the rate of change of magnetic flux, but it does not specify the opposing nature of the induced current. Kirchhoff's law deals with the conservation of charge and energy in electrical circuits, while Ohm's law relates to the relationship between voltage, current, and resistance in a conductor. Understanding Lenz’s law provides insight into the behavior of induced currents and their opposition to changes in magnetic