Podcast
Questions and Answers
What is the primary reason for the magnetic properties of materials?
What is the primary reason for the magnetic properties of materials?
- Alignment of electron spins
- Circulation of electrons around the nucleus
- Electron density variation
- Net effect of dipoles (correct)
What is the unit used to measure the magnetic moment of electrons?
What is the unit used to measure the magnetic moment of electrons?
- Ampere
- Weber
- Bohr magneton (correct)
- Tesla
What happens to the electrons in certain magnetic materials?
What happens to the electrons in certain magnetic materials?
- Their magnetic moments cancel each other out
- Their magnetic moments of a large proportion of the electrons align (correct)
- Their orbital axes align
- Their spin axes align
What is the direction of the force experienced by a magnet in an external field?
What is the direction of the force experienced by a magnet in an external field?
What is the purpose of the solenoid in the experiment?
What is the purpose of the solenoid in the experiment?
What is the classification of magnetic materials based on?
What is the classification of magnetic materials based on?
What is the term for the amount of force required to remove a material's retentivity?
What is the term for the amount of force required to remove a material's retentivity?
What is the characteristic of soft magnetic materials that makes them suitable for making electromagnets?
What is the characteristic of soft magnetic materials that makes them suitable for making electromagnets?
What happens to the value of magnetism when the magnetic field is increased until it reaches point A?
What happens to the value of magnetism when the magnetic field is increased until it reaches point A?
What happens to the susceptibility of antiferromagnetic materials beyond the Neel temperature?
What happens to the susceptibility of antiferromagnetic materials beyond the Neel temperature?
What is a characteristic of ferrimagnetic materials?
What is a characteristic of ferrimagnetic materials?
What is the process of continuously monitoring the magnetic flux released by a ferromagnetic substance as the external magnetizing field is altered?
What is the process of continuously monitoring the magnetic flux released by a ferromagnetic substance as the external magnetizing field is altered?
What is the result of inserting a ferromagnetic substance in a current-carrying coil?
What is the result of inserting a ferromagnetic substance in a current-carrying coil?
What is the advantage of soft magnetic materials in terms of energy loss?
What is the advantage of soft magnetic materials in terms of energy loss?
What is the term for the energy loss in electric machines' ferromagnetic cores due to hysteresis?
What is the term for the energy loss in electric machines' ferromagnetic cores due to hysteresis?
What is the characteristic of the hysteresis loop of soft magnetic materials?
What is the characteristic of the hysteresis loop of soft magnetic materials?
What is the point at which the magnetic field value diminishes, and the substance or material retains some magnetic retentivity?
What is the point at which the magnetic field value diminishes, and the substance or material retains some magnetic retentivity?
What is the effect of an external field on ferrimagnetic materials?
What is the effect of an external field on ferrimagnetic materials?
