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

Join the discussion
Ask a follow-up here, or get your own question answered by working scientists, mathematicians and engineers — people, not an autocomplete.
Real named experts · corrections over time · the nuance an AI answer skips
1 reply · 2K views
caljuice
Messages
70
Reaction score
0
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.
 
Physics news on Phys.org
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.