How Does Moving a Wire in a Constant Magnetic Field Affect Induced Current?

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SUMMARY

Moving a closed metal rectangular wire in a constant magnetic field does not induce current if the magnetic flux remains constant. When the magnetic flux changes, such as by increasing the magnetic field, an induced current is generated, resulting in a magnetic force acting on the wire. However, if the magnetic field is constant and the wire is moved, the induced current will not occur because the effective charge remains zero, leading to cancellation of any induced currents.

PREREQUISITES
  • Understanding of Faraday's Law of Electromagnetic Induction
  • Knowledge of the Lorentz Force Law (F = qv x B)
  • Familiarity with magnetic flux concepts
  • Basic principles of electric circuits and current flow
NEXT STEPS
  • Study Faraday's Law of Electromagnetic Induction in detail
  • Explore the implications of the Lorentz Force Law on moving charges
  • Investigate the relationship between magnetic flux and induced EMF
  • Examine practical applications of induced currents in electrical engineering
USEFUL FOR

Physics students, electrical engineers, and anyone interested in the principles of electromagnetism and their applications in technology.

caljuice
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Say I have a closed metal rectangular shaped wire in a region with a magnetic field.

If the magnetic flux is constant, there is no induced current, no experienced force, and no EMF?

If I start the changing the magnetic flux, I suppose by increasing the magnetic field, there will be an induce current and it'll start experiencing a magnetic force?

What if the magnetic field is constant but we move the wire at some speed? The flux is the same, which should mean no induced current or will F= qv x B come into play here since the wires are simply a collection of charges? If the charges experience a force then they'll move and an induced current will happen? Thanks.
 
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caljuice said:
Say I have a closed metal rectangular shaped wire in a region with a magnetic field.

If the magnetic flux is constant, there is no induced current, no experienced force, and no EMF?
Correct.

caljuice said:
If I start the changing the magnetic flux, I suppose by increasing the magnetic field, there will be an induce current and it'll start experiencing a magnetic force?
Correct.

caljuice said:
What if the magnetic field is constant but we move the wire at some speed? The flux is the same, which should mean no induced current or will F= qv x B come into play here since the wires are simply a collection of charges? If the charges experience a force then they'll move and an induced current will happen? Thanks.
The effective charge will be zero, so any induced currents will cancel out.
 

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