All Flashcards
What is the effect of high magnetic permeability?
The material is easily magnetized.
What is the effect of aligned magnetic dipole moments?
Creation of a net magnetic field.
What happens when a diamagnetic material is placed in a magnetic field?
It is repelled by the magnetic field.
What happens when the current in a solenoid is doubled?
The magnetic field inside the solenoid doubles, assuming the permeability remains constant.
What happens when a material with a higher replaces a material with a lower inside a solenoid?
The magnetic field inside the solenoid increases.
What is the definition of magnetic permeability ()?
A measure of how easily a material can be magnetized; how much a material allows magnetic field lines to pass through it.
What is the permeability of free space ()?
The magnetic permeability in a vacuum; a fundamental constant in electromagnetism.
What is the definition of magnetic dipole moment ()?
A measure of an object's tendency to interact with a magnetic field; like a tiny magnet within a material.
Define Ferromagnetism.
A type of magnetism where a material exhibits a permanent magnetic moment even without an external magnetic field.
Define Paramagnetism.
A type of magnetism where a material exhibits temporary magnetism only in the presence of an external magnetic field.
Define Diamagnetism.
A property of materials that are repelled by magnetic fields, exhibiting negative permeability.
What are the differences between and ?
: Magnetic permeability of a material, varies with temperature, pressure, and external fields. | : Permeability of free space (vacuum), a constant value.
What are the differences between Ferromagnetism and Paramagnetism?
Ferromagnetism: Permanent magnetic moment even without an external field. | Paramagnetism: Temporary magnetism only in the presence of an external field.
What are the differences between Paramagnetism and Diamagnetism?
Paramagnetism: Attracted to magnetic fields, temporary magnetism. | Diamagnetism: Repelled by magnetic fields, negative permeability.
Compare induced magnetism and permanent magnetism.
Induced magnetism: Dipoles align temporarily when an external field is applied. | Permanent magnetism: Dipoles are aligned even without an external field.