Practice portal › Electromagnetic Induction › Lenz's Law
Asked in NEET 2015 · Direction of the induced current
A moving electron carries a magnetic field with it, so the flux through the nearby coil changes
as it passes.
While the electron approaches, that flux grows, and by Lenz's law the induced current flows so as
to oppose the growth.
Once the electron has gone past, the flux falls again, so the induced current must reverse to
oppose the decrease.
No single direction is correct for the whole passage, which is why the first option is the only
true statement.
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