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Zorluk: OrtaMagnetism Fundamentals

A technician places a solid block of pure copper into a uniform magnetic field between two magnetic poles. How do the magnetic lines of flux interact with the copper block?

  1. A
    They are completely blocked at the surface because copper acts as a magnetic insulator.
  2. They pass straight through the block with virtually no distortion because copper has a relative permeability nearly equal to that of air.Cevap
  3. C
    They concentrate densely inside the copper because all metallic conductors form strong internal magnetic poles.
  4. D
    They are stored statically within the block by separating electric charges across opposite faces.

Cevap

They pass straight through the block with virtually no distortion because copper has a relative permeability nearly equal to that of air.
Magnetic flux lines pass directly through non-magnetic substances like copper with virtually no distortion because copper has a relative permeability nearly identical to that of air or a vacuum (μr≈1\mu_r \approx 1). Unlike ferromagnetic materials such as soft iron, copper does not offer a lower-reluctance path to concentrate magnetic field lines, nor does it act as a barrier to steady magnetic flux.

Adım Adım Çözüm

1
Identify the magnetic classification and permeability of copper.
Copper is a non-magnetic (diamagnetic) substance with a relative magnetic permeability (μr\mu_r) approximately equal to 1.01.0.
The degree to which a material alters or concentrates an external magnetic field is determined by its magnetic permeability relative to free space.
2
Determine how magnetic flux lines behave in a material with a relative permeability of 1.
The lines of flux maintain their original spacing and direction, passing directly through the copper block without concentration or obstruction.
Only ferromagnetic materials (such as iron, nickel, and cobalt) provide a low-reluctance path that bends and concentrates flux lines. Non-magnetic materials offer the same reluctance as air.

Anahtar Kavram

Magnetic Permeability and Flux Behavior in Non-Magnetic Materials
Tahmini Süre:1m 0s
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Konular

Magnetism Fundamentals

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