Permeability

Q. Soft iron is preferred over steel in making electromagnets because of permeability and retentivity.

1. high
2. zero
3. zero
4. low

Q.

The permeability of soft iron is higher than a piece of wood.

1. \N
2. \N
3. \N
4. \N

Q.

The ability of a substance to allow magnetic field lines of force to pass through it is called as permeability.

1. True

2. False

Q.

The permeability of soft iron is higher than a piece of wood.

1. \N
2. \N
3. \N
4. \N

Q.

Soft iron is preferred over steel in making electromagnets because ___________________

1. low permeability, high retentivity

2. high permeability, high retentivity

3. high permeability, low retentivity

4. low permeability, low retentivity

Q.

Which of the following can be a unit of permeability?

1. Newtons per ampere square

2. Henry per meter

3. Tesla per meter square

4. None of the above

Q. why soft ferromagnets like iron are preferred in transformers and solenoid?

Q. order of polarizability Hg2+, Ag+, Pb2+?

Q.

Which one of the below will have the highest magnetic susceptibility?

1. Cobalt

2. Plastic

3. Steel

4. Soft iron

Q.

Which of the following statements are correct?

1. retain magnetism acquired , Extent of magnetisation

2. retain magnetism acquired, Ability to get magnetise

3. Extent of magnetisation, Ability to get magnetise

4. Ability to get magnetise , retain magnetism acquired

Q. Answer the following question.
Mention two properties of soft iron due to which it is preferred for making
an electromagnet.

Q.

Those magnetic materials are best suited for making armature and transformer cores which have_____permeability and ________ hysterisis loss.

1. high, high

2. low, low

3. low, high

4. high, low

Q. Write two properties of a material suitable for making
an electromagnet.

Q.

Differentiate the properties of soft iron and steel relating to magnetism.

Q. All the domains in a point towards the same direction.

1. non-metal
2. metal
3. permanent magnet

Q. The ability of a substance to allow magnetic field lines of force to pass through it is called as permeability.

1. False
2. True