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What does the retentivity and coercivity of a material signify about the material?

Important Questions on Magnetism

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Science>Physics>Magnetism>Magnetic Induction
What is the value of susceptibility of a superconductor?
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Figure shows two iron nails hanging from a bar magnet. Identify the correct figure and justify your answer.

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Which among the following is not an application of hard ferromagnetic material?
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What is susceptibility in magnetic field?
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In an exhibition, a plastic car with an iron piece fixed inside it made to run on a wooden table by sliding a strong magnet below it. The experiment failed when a steel table was used instead. Explain the reason.
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Science>Physics>Magnetism>Magnetic Induction

In the figure, AB is a bar magnet, CD is a soft iron rod near the end B. write down which poles develop at the ends C and D.

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Science>Physics>Magnetism>Magnetic Induction
Do induced magnets have a north and south pole?
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Soft iron is used for making electromagnet because it
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You are given a soft iron piece, a steel piece of same size, insulated copper wire and a battery. Explain how a strong permanent magnet can be made.
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Science>Physics>Magnetism>Magnetic Induction

Assertion: A soft iron core is used in a moving coil galvanometer to increase the strength of the magnetic field.

Reason: From soft iron more number of magnetic lines of force passes.

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What is retentivity?

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What are hard and soft magnet?
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The hysteresis loss in soft magnetic materials must be kept ______
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What is hysteresis loop with its help explain the terms retentivity and coercivity?
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Science>Physics>Magnetism>Magnetic Induction
The area of B-H loop for soft iron, as compared to that for steel is :-
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Science>Physics>Magnetism>Magnetic Induction

Figure shows two iron nails hanging from a bar magnet. Identify the correct figure and justify your answer.

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Science>Physics>Magnetism>Magnetic Induction

The ability of magnetic substances to get magnetised under the influence of a magnetic field is _____.

(Choose from retentivity, susceptibility, permeability)

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Science>Physics>Magnetism>Magnetic Induction
The material of a permanent magnet has
 
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Science>Physics>Magnetism>Magnetic Induction
The phenomenon of a magnetic substance acquiring magnetism due to the presence of a magnet is
 
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Science>Physics>Magnetism>Magnetic Induction
Explain Pole in Induced Magnetism ?