vocabulary review. transformer a device for increasing/decreasing voltage
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Magnetism
Vocabulary Review
TransformerA device for increasing/decreasing voltage
ElectromagnetA magnet with a field produced by electric currentusually in the form of a wire coiled around a piece of wire
Magnetic PoleOne of the regions on a magnet that produces a magetic force
GeneratorA machine that produces electric current by rotating a coil within a stationary magnetic field
Magnetism
Which is greater?The gravitational attraction between the scrap iron and Earth or The magnetic attraction between the magnet and scrap iron? Why?
HistoryThe name "magnet" may come from lodestones (naturally occurring Magnetite) found inMagnesia
Pieces of lodestone, suspended so they could turn, were the firstmagnetic compassesand their importance to earlynavigationis indicated by the namelodestone, which means 'leading stone'
Magnetic PolesMagnets exert forces on each otherSimilar to electric charges b/c they can attract or repel without touchingTheir strength depends on the distance of separation between the two magnetsIf electric charges produce electric forcesmagnetic poles produce _______