Respuesta :
As the magnet falls away from you the direction of induced current flow anticlockwise in loop.
- Suppose we run it above the input to the coil. It is far away so there is no flux . As the magnet descends and approaches the entrance to the coil, part of the magnetic field from the magnet passes through the top few imaginary disks of the coil.
- The time-varying flux induces a certain EMF. This is the initial rise in the red part of the diagram. As the magnet continues to descend and enter the coil, more of its magnetic field weaves through the imaginary disks in the coil, so as it moves, the time rate of change of the total flux increases, so the EMF rises. Note that the field lines above and below the bar magnet point in the same direction.
- At some point the rod reaches the center of the coil. At this point, the amount of flux added to the upper half of the coil by the small movement of the magnet equals the amount of flux removed from the lower half. Therefore, at this point the EMF is zero. This is the middle point of the diagram where the EMF crosses the horizontal axis. The descending part of the red part is only an approximation to the middle part of the coil.
[tex]d X E=-\frac{dM}{dT}[/tex]
To understand more about EMF -
https://brainly.com/question/14263861
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