r o t o m Electric tors Electric mo sm to use magneti ent. vem produce mo are Today, they force the driving y behind man . vices everyday de
Nikola Tesla was an American engineer who worked on a large number of different inventions during his lifetime.
OVING M ld r o w n r e d o Getting the m The electrified wire becomes magnetized, so it swings around the magnet in a circle.
Magnet
Bowl of mercury
Faraday’s electrical experiments English scientist Michael Faraday made the first electric motor in 1821 when he produced conTinuous moTion from electricity. It worked because passing an electric current through a wire produces magnetism. Later motors used electromagnets—coils of wire around an iron core—to make this effect stronger.
way... By thearted a small
in t I once s g earthquake y in m m but alarurse of one ofther the co nts, and ano e g experim made terrifyin ! time ial lightning artific
Motoring on German engineer moriTz Von Jacobi used electromagnets to make a motor powerful enough to be put to practical use. In a world first, an improved version of his motor drove a paddleboat across the Neva River in Russia in 1838 with 14 people on board.
u l d n ’ t h ave h a p o c pene It d w it h o ut … In 1820, HAns Oersted discovered electrOMAgnetisM— he found that an electric current could create a magnetic field.
16
The wire is coiled into eight electromagnets. Passing a current through the wire makes the central wheels turn. Electric current provided by a battery travels through the wire.
Also in 1820, André-MArie AMpère worked out the relationship between the electromagnetic force and the electric current.
