Moving a bar magnet through a coil

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SUMMARY

The discussion focuses on the electromagnetic principles involved when a bar magnet is moved through a coil, specifically analyzing the graphs of magnetic flux and induced current over time. As the magnet enters the coil, the magnetic flux increases until it reaches a plateau while the magnet is fully inside the coil, followed by a decrease as it exits. The induced current is directly related to the negative change in flux, resulting in a similar plateau during the magnet's presence within the coil. This behavior is consistent with Faraday's Law of Electromagnetic Induction.

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  • Understanding of Faraday's Law of Electromagnetic Induction
  • Knowledge of magnetic flux concepts
  • Familiarity with graphing techniques in physics
  • Basic principles of induced current and its relationship to changing magnetic fields
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Students studying electromagnetism, physics educators, and anyone interested in the principles of electromagnetic induction and their applications in real-world scenarios.

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Homework Statement



You move a bar magnet through a coil at a constant speed. Graph the flux through the loop as a function of time. Graph the induced current in the loop as a function of time.

Homework Equations





The Attempt at a Solution



Graph of flux vs time:

I'm thinking is should look like a normal curve but once part of the magnet enters the loop will it be constant until the other end of the magnet exits the coil?

Graph of induced current vs time:

Same as flux vs time?
 
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Flux out the North end of the magnet is the same as flux into the South end.
.. so, there should be a fairly long "plateau" on the top of the "normal" curve.

but the Current is induced by the NEGative CHANGE of flux ( neg. slope)
 
So there will be a flat plateau where "bar" of the magnet is inside the loop?
 

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