martes, 18 de enero de 2011

ELECTRICAL CURRENT

Electrical current is the flow of electrical charges. It transmits energy called electricity.

Electrical current flows differently, depending on the type of material through which it flows.

-Conductors:electrical current flows easily through conductors. Most metals are conductors.

-Insulators: electrical current does not flow easily through insulators, such as air, glass, plastic, wood and rubber.

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