What does Lenz's Law state about induced currents?

Lenz's Law is a fundamental principle in electromagnetism that describes how induced currents respond to changes in magnetic flux. According to Lenz's Law, induced currents will flow in a direction that opposes the change in magnetic flux that produced them. This opposition arises to conserve energy and maintain equilibrium in the system.

When a magnetic field through a circuit changes, whether due to the relative motion of a magnet and a conductor or other dynamic electromagnetic interactions, an electromotive force (emf) is generated. The induced current, therefore, will create its own magnetic field that counteracts the original change. This behavior is essential because it ensures that the energy in the system is conserved and not lost to unrestrained amplification of the change.

Thus, the correct answer reflects Lenz's Law's central tenet that induced currents work against the external changes triggering them, illustrating a crucial principle in electromagnetic theory and applications such as generators and inductors.