Magnetic needle inside a solenoid

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Discussion Overview

The discussion revolves around the behavior of a magnetic needle when placed inside a solenoid, particularly focusing on the orientation of the needle's poles in relation to the solenoid's poles. The scope includes conceptual understanding and practical implications of magnetic fields generated by solenoids.

Discussion Character

  • Conceptual clarification, Technical explanation

Main Points Raised

  • Some participants inquire whether the South Pole of a magnetic needle will be directed towards the South Pole of the solenoid, given that the solenoid's interior is considered to have a North Pole.
  • There is a suggestion that to change the compass direction by 180 degrees, one could place the compass in a solenoid oriented with its North Pole towards the geographic South Pole of the Earth.
  • One participant expresses a need to confirm their understanding as they are solving a related problem.

Areas of Agreement / Disagreement

Participants express similar views regarding the orientation of the magnetic needle in relation to the solenoid, but the discussion does not reach a consensus on the necessity or implications of changing the compass direction.

Contextual Notes

There are assumptions regarding the strength of the solenoid's magnetic field and its effect on the compass needle that are not fully explored or defined.

Entanglement
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What will happen If I place a magnetic needle inside a solenoid, I mean will the South Pole of the needle be directed towards the South Pole of the solenoid since it is north from inside and the same way regarding the North Pole
 
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I mean will the South Pole of the needle be directed towards the South Pole of the solenoid since it is north from inside and the same way regarding the North Pole
Right.
 
mfb said:
Right.
Thanks !
 
mfb said:
Right.
So If I want to change the compass direction by 180 degrees should I place the compass in a solenoid that's North Pole is towards the geographic South Pole of the Earth and the south of the solenoid towards the Geographic North Pole of the Earth ?
 
That is possible (assuming the field of the coil is strong enough), but why would you want to change the direction of a compass needle like that?
 
That's a problem that I was solving I am making sure my answer is right
 
Thanks a lot !
 

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