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This resource describes how electricity is measured. It explains voltage, current, resistance, ohm's law and electrical power.
http://www.eia.gov/kids/resources/teachers/pdfs/MeasuringElectricityIntermediateSecondary.pdf
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ليکندرو
خور تهندرو
چُاپ تهيلُا حق
CC 0 / public domain
