Lenz's Law And Faraday's Law Of Induction

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use of the use of the right hand rule. If the flux decreases, so the
induced current produces an upward magnetic field that is "trying" to maintain
the status quo.
Let us consider what would happen if Lenz's law were just the reverse.
The induced current would produce a flux in the same direction as the original
change; this greater change in flux would produce an even larger current,
followed by a still larger change in flux, and so on. The current would continue
to grow indefinitely, producing power (=) even after the original stimulus ended.
This would violate the conservation of energy. Such "perpetual - motion" devices
do not exist.
It is important to note, which I believe was forgotten in the class
lecture, is that Faraday's investigation, as summarized in Faraday's law, says
that an emf is induced whenever there is a change in flux. Thus an emf can be
induced in two ways: (1) by changing the magnetic field B; or (2) by changing
the area A of the loop or its ...

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