APFIVE Relative Permeability And Magnetic Field
A material has a relative permeability μr = 1.0000023. If this material is placed in a solenoid with current I, how will the magnetic field inside the material compare to the field that would exist in vacuum?
A
Slightly weaker by a factor of 0.9999977
B
Unchanged since μr ≈ 1
C
Slightly stronger by a factor of 1.0000023
D
Much stronger due to domain alignment
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