Nature of Magnetism Flashcards
Magnetism
permits it to attract magnetic substances
Megnetic Field
zone of influence around a magnet, flows from north to south
Permeabilty
ease with which material can be attracted
Magnetic Retentivity
ability of material to stay magnetized
Natural Magnets
earth is the largest, produced by nature
Artificial Permanent Magnets
commonly shape like a horseshoe or a bar, alnico
Electromagnets
temporary magnets, produced by electric current
Laws of Magnetism
magnetic poles, repulsion-attraction, the inverse square law
Magnetic Poles
every magnet has 2 poles at each end, north and south pole
Repulsion-Attraction
repulsion-like magnetic poles repel each other
attraction-unlike magnetic poles attract each other
The Inverse Square Law
the closer the magnets are the stronger they are, the farther they are the weaker
Magnetism Phenomena
Associated Phenomena
breaking magnets, heating or hammering, stroking,& jarring
Magnetic Dipole
small magnets created by the electron orbit
Non-magnetic Material
equal electrons, cancel magnetic effects
Non-magnetized Magentic Material
wannabe’s, can be’c
Ferrormagnetic Materials
simply magnetic, highly permeable
Paramagnetic Materials
low permeabiliy, weak attraction to magnetic fields
Nonmagnetic Materials
cannot be magnetized
Diamagnetic Materials
weakly repelled, annot be artifically magnetixed, no magnet attraction
Electromagnetism
relationship between electricity and magnets
Electromagnetic Induction
line of force around the magnet
Solenoid
current carrying coiled conductor
Electromagnetic Induction Process
inducing an EMF into a conductor as it cuts magnetic lines of force
Faraday’s Law
speed of motion, strength of the magnetic field, angle, & number of turns
