What Happens to the Bar Magnet When the Switch is Closed?

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Homework Help Overview

The discussion revolves around the behavior of a bar magnet in relation to a coil connected to a battery when a switch is closed. The subject area includes electromagnetism and magnetic fields.

Discussion Character

  • Exploratory, Conceptual clarification, Assumption checking

Approaches and Questions Raised

  • Participants explore the effects of current on the magnetic field and its interaction with the bar magnet. Questions arise regarding the direction of current and its impact on the magnetic field lines, as well as the resulting force on the magnet.

Discussion Status

The discussion is ongoing, with participants questioning the direction of current and its implications for the magnetic field. Some guidance is offered in the form of suggestions to visualize magnetic field lines, but no consensus has been reached.

Contextual Notes

Participants are considering the orientation of the current and its effect on the magnetic field, which may influence their understanding of the problem. There is uncertainty regarding the direction of the force acting on the magnet.

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Q: A coil is connected to a battery as shown in the figure and a bar magnet is suspended with its N pole just above the center of the coil.


What will happen to the bar magnet just after the switch S is closed?



20-0.jpg




Answer choices:
It will be pulled toward the coil.
It will be pushed away from the coil.
It will be pushed out of the paper.
It will be pushed into the paper.


My guess:
I think that when the switch is closed the current makes the coil change the mag. field and will attract the magnet..?
:((
 
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Does it matter that the current through the coil flows downward?
 
Try to draw the magnetic field lines generated due to the current. How will they affect the magnet?
 
I'm not sure of the direction of the force in the coil.
 

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