Magnetism
Number of poles all magnets have
Two
Material where electron spin does not cancel out, thus the material has magnetic properties.
Ferromagnetics
Rule used to determine the direction of magnetic field lines produced by electric current flowing in a wire.
Right Hand Rule
Charged particle must be moving in this direction relative to a magnetic field in order to have the magnetic force exert a force on it
Perpendicular
Approximate location of Earth's magnetic South Pole
Geographical North Pole
Direction magnetic field lines move
From North to South
Areas in certain materials where all the spins point the same direction
Domains
Year it was discovered that electric current creates a magnetic field
1820
If there is a parallel component of motion that the charged particle has relative to the magnetic field, it will move in this shape
Helical (like a candy cane stripe)
Approximate location of Earth's magnetic North Pole
Geographical South Pole
Where is a magnet strongest?
At the poles
What is a soft ferromagnetic material?
Material that is easily magnetized and demagnetized.
Shape magnetic field lines form around a straight wire with current flowing through it.
Concentric circles
Equation for magnitude of force magnetic field exerts on charged particle
F=qvB
Symbol for magnetic field
B
Unit for magnetic fields
Teslas
What are hard ferromagnetic materials?
Materials where it is difficult to magnetize and demagnetize.
Name of putting wires into a loop or donut shape
Solenoid
Equation for magnitude of force exerted on a wire with current flowing through it
F=ILB
Symbol for electric charge
q
What is the source of magnetism?
Moving Charge
Name one of the three hard ferromagnetic materials we discussed.
Nickel, Cobalt, or Neodymium
Name one of the three ways to increase the strength of the magnetic field inside of a solenoid
Increase the current, increase number of loops, or add an iron core to the center of the loops
Unit for electric charge
Coulombs
Electron property that produces a magnetic effect
Spin