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33 Cards in this Set
- Front
- Back
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KEEPERS
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used to store magnets
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commutator
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split copper ring
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rotor
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moving part
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brushes
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contacts
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magnetic saturation
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maximum number of dipoles are aligned
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lodestones
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magnetic rocks from Greece
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SECONDARY coil
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where current is INDUCED
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magnetic inclination
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angle between horizontal line and direction of magnetic field
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poles
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where magnetic field is strongest
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solenoid
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loops of wires to intensify magneticfield
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step up
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transformer that increases voltage
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magnetic declination
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angle between true north and magnetic north
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Oersted
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said electric currents deflect compass needle
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magnetic field lines
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reveal the shape of a magnetic field
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electromagnetic waves
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has vibrating electirc and magnetic fields that regenerate each other
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electromagnetic induction
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inducing voltage by changing the magnetic field around a conductor
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hard ferromagnetic
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is a magnet all the time
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diamagnetic
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slight decrease in magnetic field
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PRIMARY coil
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where current is SUPPLIED
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glavanometer
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used to detect small electric currents
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step down
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transformer that reduces voltage
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electromagnet
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current carrying coil wire with many loops
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reverse magnetism
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caused by placing a weak magnet near a strong magnet
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transformer
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device used to change voltages
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generator
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convert mechanical energy to electrical
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paramagnetic
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not quite a magnet
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stator
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nonmoving
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magnetic field
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space around a magnet where magnetic force is exerted
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ferromagnetic
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material containing iron, nickel, cobalt, can be a magnet
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dipole
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atomic magnet
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soft ferro magnetic
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can be a magnet in presense of another magnet
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motor
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converts electric energy to mechanical energy
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demagnetization
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caused by dropping or heating
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