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कर्नाटक बोर्ड पी.यू.सी.पीयूसी विज्ञान 2nd PUC Class 12

Is the permeability of a ferromagnetic material independent of the magnetic field? If not, is it more for lower or higher fields?

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प्रश्न

Is the permeability of a ferromagnetic material independent of the magnetic field? If not, is it more for lower or higher fields?

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उत्तर

The permeability of ferromagnetic materials is not independent of the applied magnetic field. It is greater for a lower field and vice versa.

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पाठ 5: Magnetism and Matter - Exercise [पृष्ठ २०२]

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एनसीईआरटी Physics Part I and II [English] Class 12
पाठ 5 Magnetism and Matter
Exercise | Q 5.16 (d) | पृष्ठ २०२

संबंधित प्रश्‍न

Show diagrammatically the behaviour of magnetic field lines in the presence of (i) paramagnetic and (ii) diamagnetic substances. How does one explain this distinguishing feature?


Distinguish between diamagnetic and paramagnetic substances.


The magnetic susceptibility of annealed iron at saturation is 4224. Find the permeability of
annealed iron at saturation. (μ0 = 4Π × 10−7 SI unit)


Which of the following substances are para-magnetic?

Bi, Al, Cu, Ca, Pb, Ni


There are three needles 'N1', 'N2' and 'N3' made of a ferromagnetic, a paramagnetic and a diamagnetic substance respectively. When a magnet is brought close to them, then it will ____________.


If a toroid uses bismuth for its core, will the field in the core be (slightly) greater or (slightly) less than when the core is empty?


Of dia, para and ferromagnetism, the universal property of all substances is ______.

Core of elctromagnets are made of ferromagnetic materials which have ______.

The universal property of all substances is ______.


A uniform magnetic field gets modified as shown in figure when two specimens A and B are placed in it.

(a) (b)
  1. Identify the specimen A and B.
  2. How is the magnetic susceptibility of specimen A different from that of specimen B?

What is magnetic hysterisis?


Explain ferromagnetism on the basis of the domain theory.


State the dimensions of magnetization.


Explain the Domain theory in brief.


Which substances are strongly magnetised in the direction of the magnetising field?


Which list contains only examples of ferromagnetic substances?


What happens to paramagnetic substances on cooling at the Curie temperature?


Which mathematical relation expresses Weiss Law for ferromagnetic substances above the Curie temperature?


What happens to ferromagnetic substances on heating beyond the Curie temperature?


What causes the magnetic behaviour of ferromagnetic substances?


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