Question

How is Lenz's law related to the Law of Conservation of Energy?

Options

• It replaces Faraday's laws for determining EMF magnitude.

• It is a direct physical consequence of the Law of Conservation of Energy.

• It is an independent principle unrelated to energy conservation.

• It permits electrical energy to be generated from nothing.

Answer 1

Lenz's law is not an independent principle: its opposition to flux change is required by energy conservation. Without that opposition, induction could generate energy without external work.