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conducter (metal, water)
materials that allow the flow of free charged particles
semiconductor (televisions, mobile phones)
intermediate class, conduction between an insulator and conductor
insulators (wood, air, rubber)
materials that inhibit the flow of free charged particles
repel
Like charges…
attract
Unlike charges…
Coulomb's Law
the size of the electric force between two charged particles depends on the size of the charges and the distance between them.
rubber rod- electrons are repelled
glass rod- charge attracts
how does an electroscope work?