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Electrical Power System

Updated on August 7, 2009

To better understand how electric power is produced and transmitted to our houses, you must know some of the most important terms used in electricity.

Voltage - is the potential difference between two points

Current - is the flow of electric energy from the source through the lines

Direct Current (DC) - the flow of current is always in the same direction

Alternating Current (AC) - the current flow changes its direction periodically

Frequency - describes the number of complete cycles performed in one second

Ammeter - the flow of current passing in a given time resistance; the force which opposes and reduces the flow of electric current

Power - refers to the amount of work done by electrical energy at a given time to make a load work

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