Flashcards in Magnets Deck (28)
If a material has high permeability, it is easy or hard to magnetize?
What device can be use to detect magnetism?
A set of Christmas lights designed so that if on bulb burns out they all will burn out would be an example of a ______ circuit
If a material has high retentivity, is it easy or hard to demagnetize?
In _____ Field Theory of Electromagnetic Radiation, force is proportional to the product of the magnetic pole strengths divided by the square of the distance between them
If two like poles of a magnet are put together, they will be
_______ are typically produced by charging them in a field of an electromagnet
3 metals used to make "alnico"
The geographic North Pole is a magnetic ______ pole
S.I. Unit of magnetic field strength is the _____
Materials that are highly attracted to a magnet are called:
In what direction do magnetic flux lines travel in space
North to South
Give 2 examples of magnetic materials
Give 2 examples of non magnetic materials
Equation for Ohm's Law
Never changes in a series?
Never changes in a parallel circuit?
Difficult to detect and measure: mass is heavy, energy is seen, and electricity creates shocks, but creates an invisible field
Any ____ particle in motion can create a magnetic field
Electrons circle a nucleus either clockwise or counter clockwise
Lines of a magnetic field are always closed __1__ and are __2__ or __3__
Small magnet created by electron orbit
Accumulation of many atomic magnets with dipoles aligned
Flux lines traveling in the opposite direction will __1__, and flux lines traveling in the same direction will __2__.
Nonmagnetic, cannot be magnetized
Between feromagnetic and nonmagnetic
Ability to retain magnetization