Physics 2007 JAMB Past Questions - Question 16: Lenzs law is the law of conservation of

Correct Answer

A

Explanation

Lenz's law of electric magnetic induction is usefully referred to as a law of of n conservation of energy.Lenz's Law is a fundamental law in electromagnetism that is closely related to the law of conservation of energy. It is often stated as "The direction of the induced current in a conductor will be such that it opposes the change in magnetic flux that produced it." In other words, when a change in magnetic flux occurs through a closed circuit, it induces an electromotive force (EMF) and an associated current in the circuit.

This law is a consequence of the principle of conservation of energy. When there is a change in magnetic flux through a coil or conductor, Lenz's Law ensures that the induced current generates a magnetic field that opposes the change in the original magnetic flux. This opposition leads to the conversion of some of the energy of the changing magnetic field into electrical energy in the circuit.

In summary, Lenz's Law is a specific application of the conservation of energy in electromagnetic systems, stating that the induced current will always work to oppose the change in magnetic flux, and this law helps maintain the overall energy balance in electromagnetic processes.