Magnetic Properties of Materials
Physics ⇒ Electricity and Magnetism
Magnetic Properties of Materials starts at 10 and continues till grade 12.
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A bar of soft iron is placed inside a solenoid carrying current. What happens to the magnetic field inside the solenoid?
A material has a magnetic susceptibility of -0.0001. What type of magnetic material is it?
A material has a relative permeability of 0.999. Is it likely to be diamagnetic, paramagnetic, or ferromagnetic?
A sample of material is placed in a magnetic field and is weakly repelled. What type of magnetic material is it most likely to be?
Describe the behavior of magnetic domains in a ferromagnetic material when an external magnetic field is applied.
A bar of soft iron is placed inside a solenoid carrying current. What happens to the magnetic field inside the solenoid?
A material has a magnetic susceptibility of -0.0001. What type of magnetic material is it?
A material has a relative permeability of 0.999. Is it likely to be diamagnetic, paramagnetic, or ferromagnetic?
The Curie temperature of iron is approximately:
(1) 1043 K
(2) 273 K
(3) 373 K
(4) 2000 K
The magnetic susceptibility (χ) of a diamagnetic material is:
(1) Positive and large
(2) Positive and small
(3) Negative and small
(4) Zero
Which of the following best describes the magnetic susceptibility of a ferromagnetic material?
(1) Large and positive
(2) Small and positive
(3) Large and negative
(4) Small and negative
Which of the following is a typical example of a paramagnetic material?
(1) Bismuth
(2) Copper
(3) Aluminium
(4) Nickel
Fill in the blank: The ability of a material to become magnetized in an external magnetic field is called ________.
Fill in the blank: The process of making a material lose its magnetization is called ________.
The relative permeability (μr) of a paramagnetic material is slightly ________ than 1.
The SI unit of magnetic susceptibility is ________.
State whether the following statement is true or false: All materials are affected by magnetic fields to some extent.
State whether the following statement is true or false: Diamagnetic materials are repelled by a magnetic field.
State whether the following statement is true or false: Paramagnetic materials lose their magnetism when the external magnetic field is removed.
State whether the following statement is true or false: The magnetic permeability of vacuum is exactly 1.
