Magnetism Basics Quiz

What is the unit of magnetic field strength (H) in the International System of Units (SI)?

• Tesla

• Ampere per metre

• Weber

• Gauss

Which of the following best describes a hysteresis loop?

• A graph showing the relationship between electric current and voltage

• A graph showing the relationship between magnetic field strength (H) and magnetic flux density (B)

• A graph showing the relationship between temperature and resistance

• A graph showing the relationship between force and displacement

What is the term used to describe the ability of a material to support the formation of a magnetic field within itself?

• Conductivity

• Permeability

• Resistivity

• Permittivity

Which of the following statements is true about magnetic domains?

• They are regions within a material where the magnetic moments are randomly aligned.

• They are regions within a material where the magnetic moments are aligned in the same direction.

• They are regions within a material where the electric charges are aligned.

• They are regions within a material where the temperature is uniform.

What is saturation magnetization?

• The maximum magnetic field strength a material can withstand

• The maximum magnetic flux density a material can achieve

• The temperature at which a material loses its magnetic properties

• The point at which a material becomes electrically conductive

At what temperature does a ferromagnetic material lose its magnetic properties?

• Boiling point

• Melting point

• Curie temperature

• Freezing point

Which of the following materials is known for having high permeability?

• Copper

• Aluminium

• Iron

• Plastic

In a hysteresis loop, what does the area enclosed by the loop represent?

• The energy lost due to magnetic hysteresis

• The total magnetic flux

• The maximum magnetic field strength

• The temperature of the material

What happens to the magnetic domains in a ferromagnetic material when it is magnetised?

• They become randomly oriented

• They align in the direction of the applied magnetic field

• They shrink in size

• They disappear

Which of the following is NOT a factor that affects the permeability of a material?

• Temperature

• Magnetic field strength

• Material composition

• Colour