Magnetic Field and Current Flow: Explained

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SUMMARY

The discussion centers on the relationship between magnetic fields and current flow, specifically addressing how the magnetic field (B) changes direction when passing through a conductive sheet. When the magnetic field is parallel to the sheet, it maintains equal magnitude on both sides but reverses direction by \(\frac{1}{2}\pi\). This indicates that the current (I) flows along the z-axis, which is perpendicular to the magnetic field. The orientation of the z-axis is defined relative to the plane of the sheet, suggesting that if the sheet is aligned with the computer screen, the z-axis extends into the page when the current flows leftward.

PREREQUISITES
  • Understanding of electromagnetic theory
  • Familiarity with vector fields
  • Knowledge of current flow in conductive materials
  • Basic principles of magnetic field orientation
NEXT STEPS
  • Study the right-hand rule for determining the direction of magnetic fields and current flow
  • Explore Maxwell's equations for a deeper understanding of electromagnetic interactions
  • Learn about the Lorentz force and its implications for charged particles in magnetic fields
  • Investigate the effects of magnetic field changes on current flow in various materials
USEFUL FOR

Students of physics, electrical engineers, and anyone interested in the principles of electromagnetism and their applications in technology.

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Homework Statement


Hello: I have the following:
The component of the magnetic field parallel to a plane of sheet is the same magnitude on both sides, but changed direction by \frac{1}{2}\pi in going through the sheet.

I am supposed to explain what is going on. So B were to change direction, does that mean that the current is flowing along the z axis? (because B is always perpendicular to the direction of I)?

Thanks.
 
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Assume the sheet is in the plane of your computer screen. What is the direction of the z-axis relative to this plane?
 
if the sheet were the computer screen, then z would be into the page if the current were flowing to the left. I was thinking if the sheet were along the y-z plane, and the current were flowing along the y direction, then z would be pointing upwards. Does this mean that we have another field nearby that is changing its direction as it goes through the sheet? Thanks.
 

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