Question
Download Solution PDFOn keeping a paramagnetic material in a magnetic field, the magnetic flux density inside the material is likely to:
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFConcept:
- Paramagnetic substances are those which develop feeble magnetization in the direction of the magnetizing field.
- Such substances are feebly attracted by magnets and tend to move from weaker to stronger parts of a magnetic field.
- Magnetic susceptibility is small and positive i.e. 0 < χ.
- Example: Manganese, aluminum, chromium, platinum, etc.
Explanation:
- When a paramagnetic substance is placed in a strong magnetising field, the magnetic field lines prefer to pass through the specimen rather than through air.
- Thus magnetic induction inside the sample is more than the magnetic induction outside the sample.
Diamagnetic substances:
- Diamagnetic substances are those which develop feeble magnetization in the opposite direction of the magnetizing field.
- Such substances are feebly repelled by magnets and tend to move from stronger to weaker parts of a magnetic field.
- Magnetic susceptibility is small and negative i.e. -1 ≤ χ ≤ 0.
- Examples: Bismuth, copper, lead, zinc, etc.
Ferromagnetic substances:
- Ferromagnetic substances are those which develop strong magnetization in the direction of the magnetizing field.
- They are strongly attracted by a magnet and tend to move from weaker to the stronger part of a magnetic field.
- Magnetic susceptibility is very large and positive i.e. χ > 1000
- Example: Iron, cobalt, nickel, gadolinium, and alloys like alnico.
Last updated on May 26, 2025
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