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. $\frac{I}{H}$

2. $\frac{B}{{\mu }_{0}H}$

3. ${\mu }_{r}$

4. $\frac{{\mu }_{r}B}{H}$

Subtopic:  Magnetization & Magnetic Intensity |
From NCERT
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A bar magnet has coercivity $4×{10}^{3}$ $A{m}^{-1}$. 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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