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Ellära och magnetism

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by

Ida Welin

on 16 October 2014

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Transcript of Ellära och magnetism

Ellära och magnetism
Atomen
Åska
Molnen blir elektriskt laddade
Elektrisk urladdning- åskoväder
Spänning och ström
Batteri -
spänningen
bestäms av skillnader i elektrisk laddning. Enhet: volt (V)

Sluten krets ger
ström.
Enhet: ampere (A)
Kopplingsschema
Ledare och isolator
Atom- elektriskt neutral
Jon- laddad partikel
Laddade partiklar påverkar varandra
Olika laddning
attraherar
varandra
Lika laddning
reppelerar
varandra
Resistans
Strömmen möter på motstånd i glödtråden
I= ström
B= magnetfält
Ringklocka- användning av elektromagnet
Tumregeln
Elektromagneter
Generator
Elsäkerhet
Magnetism
Elmotorn
Betydelse av elmotor/generator
Elmotor
Generator
Full transcript