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?
Calculate the magnetization (M) of a material if the magnetic moment is 0.02 A·m2 and the volume is 0.001 m3.
Calculate the relative permeability (μr) of a material if its magnetic susceptibility (χ) is 0.002.
Describe the behavior of magnetic domains in a ferromagnetic material when an external magnetic field is applied.
Describe the main difference between ferrimagnetic and antiferromagnetic materials.
Explain the difference between hard and soft magnetic materials, giving one example of each.
Explain why ferromagnetic materials can be permanently magnetized, but paramagnetic and diamagnetic materials cannot.
Explain why superconductors are considered perfect diamagnets.
Name the temperature above which a ferromagnetic material becomes paramagnetic.
