Magnetic Permeability in a Solenoid
The magnetic permeability of a material is μ = 5μ₀, where μ₀ is the permeability of free space. If this material is placed in a solenoid with current I, by what factor does the magnetic field inside the solenoid change compared to when the solenoid contains only air?
A
1/5
B
√5
C
5
D
25
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