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

AI Thread Summary
In a constant magnetic field, a closed metal rectangular wire experiences no induced current, force, or EMF due to unchanging magnetic flux. When the magnetic flux changes, such as by increasing the magnetic field, an induced current is generated, resulting in a magnetic force. If the wire moves through a constant magnetic field, the magnetic flux remains unchanged, suggesting no induced current; however, the motion of charges within the wire can lead to an induced current due to the Lorentz force (F = qv x B). Ultimately, any induced currents from moving charges will cancel out, resulting in no net effect. Understanding these principles is crucial for applications in electromagnetism and electrical engineering.
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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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