Class 12 Physics Magnetism and Matter Magnetic Materials (Diamagnetic, Paramagnetic and Ferromagnetic)

Easy

Which of the following is desirable for making permanent magnets?

TS EAMCET 2020 All TS EAMCET

A
Low coercive field and low retentivity
B
Low coercive field and high retentivity
C
High coercive field and high retentivity
D
High coercive field and low retentivity

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Class 12 Questions

Class 12

Physics Questions

Chapter

Magnetism and Matter

Subtopic

Magnetic Materials (Diamagnetic, Paramagnetic and Ferromagnetic)

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Similar Questions

Core of electromagnets are made of ferromagnetic material which has

MediumKCET 2015

The Curie temperatures of cobalt and iron are $1400 \,K$ and $1000 \,K$ respectively. At $T=1600 \,K$, the ratio of the magnetic susceptibility of cobalt to that of iron is

The variation of magnetic susceptibility $(\chi )$ with temperature for a diamagnetic substance is best represented by:

Medium

Assertion $(A)$: Electromagnets are made of soft iron.
Reason $(R)$: Coercivity is small for soft iron.

EasyAP EAMCET 2017

Explain paramagnetism and paramagnetic substances.

Medium

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