355 Magnetism && Electromagnetism Flashcards
The amount of residual magnetism is determined by _______.
the type of material
the size of the specimen
& its configuration or shape
A _________ magnet retains its magnetism after the outside magnetizing force has been removed.
A permanent magnet
TRUE or FALSE
Electrons determine whether a magnetic field is north or south by the direction of their spin.
TRUE
What is permeability?
Permeability is the degree to which a magnetic force can be established in a given material.
When a material has been magnetized to its limits, it has reached _________.
magnetic saturation
What is a domain?
What is the moveable portion of a relay?
The armature
What is the Domain Theory of Magnetism
In what direction do the magnetic lines of force extend outside the magnet?
From North to South
