Magnetic moment in a uniform/non-uniform magnetic field?

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Wiz700
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Hello,

What's the difference?
Being in a uniform or nonuniform magnetic field?
If a magnetic moment(magnet) is place in both, what is the result?
 
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And, is an electromagnet's magnetic field uniform or nonuniform?
I do know that a Solenoid is uniform, but not sure about an electromagnet though.
 
Wiz700 said:
What's the difference?
Being in a uniform or nonuniform magnetic field?
If a magnetic moment(magnet) is place in both, what is the result?
A magnetic moment will experience a torque in any magnetic field.
It will only experience a force in an inhomogeneous magnetic field.
 
Wiz700 said:
And, is an electromagnet's magnetic field uniform or nonuniform?
I do know that a Solenoid is uniform, but not sure about an electromagnet though.
The magnetic field outside an electromagnet or a finite length solenoid is nonuniform.
It is the field of a magnetic dipole, which is given in most textbooks.