The magnetization of a piece of iron or steel:

1. depends on the strength of the magnetizing field.
2. depends on external conditions such as temperature.
3. cannot be done beyond the saturation point.
4. all of these.

Subtopic:  Magnetization & Magnetic Intensity |
 88%
From NCERT
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When a magnetic material is subjected to a very small magnetising force \(H,\) the intensity of magnetisation is proportional to:

1. \(\frac{1}{\sqrt{H}} \) 2. \(\sqrt{H} \)
3. \(H \) 4. \(H^2\)
Subtopic:  Magnetization & Magnetic Intensity |
 81%
From NCERT
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A uniform magnetic field, parallel to the plane of the paper existed in space initially directed from left to right. When a bar of soft iron is placed in the field parallel to it, the lines of force passing through it will be represented by:

1.  2.
3. 4.
Subtopic:  Magnetization & Magnetic Intensity |
 81%
From NCERT
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The magnetic moment of a magnet \((10 ~cm\times 4~cm\times1~cm)\) is \(4 ~Am^2\). Its intensity of magnetisation is:

1. 10A/m

2. 10A/m

3. 10A/m

4. 10A/m

Subtopic:  Magnetization & Magnetic Intensity |
 78%
From NCERT
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S.I. unit of intensity of magnetization is:

1. Ampere-metre 2. Ampere-metre2
3. Ampere/metre 4. Ampere/metre2
Subtopic:  Magnetization & Magnetic Intensity |
 61%
From NCERT
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The magnetic dipoles in a diamagnetic material are represented, for three situations. The three situations differ in magnitude if a magnetic field is applied to the material. In which situation the magnetization of the material is the greatest:

    
1. A

2. B

3. C

4. equal in A, B, and C

Subtopic:  Magnetization & Magnetic Intensity |
From NCERT
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Which of the following is not dimensionless?
(where symbols stand for their usual meanings in magnetism)

1. IH

2. Bμ0H

3. μr

4. μrBH

Subtopic:  Magnetization & Magnetic Intensity |
From NCERT
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A bar magnet has coercivity 4×103 Am-1. It is desired to demagnetize it by inserting it inside a solenoid 12 cm long and having 60 turns. The current that should be sent through the solenoid is:

1. 2 A

2. 4 A

3. 6 A

4. 8 A

Subtopic:  Magnetization & Magnetic Intensity |
 52%
From NCERT
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