kidzsearch.com > wiki   Explore:web images videos games  

Electric power




KidzSearch Safe Wikipedia for Kids.
Jump to: navigation, search
Electric power transmission uses cables and electricity pylons like this near Bartholomä in Germany

Electric power is defined as the power dissipated by an electric circuit. Electric power is a measurement of the rate at which energy is used over a period of time. The SI unit for power is the watt, the unit for energy is the joule, and the unit for time is the second, and the unit for electric current is the ampere.

When electric current flows through a circuit its slowed down by the resistance in the circuit. Devices can convert this current to useful forms of work, such as heat radiation, light emission, mechanical motion, or acoustic vibrations.

References

      . http://books.mcgraw-hill.com/getbook.php?isbn=0071377352. 
      . http://books.mcgraw-hill.com/getbook.php?isbn=0070220050. 




Help Improve This Page: Please contact us to become an approved KidzSearch editor and provide your credentials. Provide feedback on this article in our Electric power Forum


da:Effekt (fysik)#Effekt i elektriske kredsløb et:Võimsus#Võimsus elektrotehnikas sv:Effekt#För likström (DC) och spänning