Practice portal › Electromagnetic Induction › Lenz's Law
Asked in GSEB Board July 2022 · Direction of the induced current
Idea: Lenz's law says the induced current opposes the change that produces it.
The N-pole is moving away, so the flux from the magnet through the coil is decreasing.
To oppose this, the coil must attract the receding N-pole back towards itself.
A face that attracts an N-pole is an S-pole (current clockwise as seen from the magnet).
So the near end of the coil behaves as an S-pole only.
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