When the magnet stops and then is moved down through the loop of wire, the reading on the meter (typically an ammeter or voltmeter) will initially drop to zero when the magnet stops moving. This is because there will be no change in the magnetic flux through the loop of wire, which means there is no induced electromotive force (emf) or current.
However, once the magnet is moved down through the loop, it will create a change in the magnetic flux through the loop. According to Faraday's Law of Electromagnetic Induction, this change will induce a current in the wire loop. The direction and magnitude of the induced current will depend on the speed of the magnet's motion and the orientation of the magnet's poles.
If the magnet is moved down quickly through the loop, the reading on the meter will show a significant increase in current (or voltage) in one direction. Once the magnet completely leaves the loop, the reading will return to zero again, as there will be no further change in magnetic flux.
In summary, the pattern would be:
- Initial reading = 0 (when the magnet is stopped)
- Increase in reading (when the magnet is moved down through the loop)
- Drop back to 0 (after the magnet completely leaves the loop)
The specific characteristics of the reading (magnitude and polarity) will depend on the specifics of the magnet's motion relative to the loop.
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