29 Dec '13, 9am

@BlackNerd Sorry for this…. #WorstJokeEver #Transformers3

A transformer is an electrical device that takes electricity of one voltage and changes it into another voltage. You'll see transformers at the top of utility poles and even changing the voltage in a toy train set. Basically, a transformer changes electricity from high to low voltage using two properties of electricity. In an electric circuit, there is magnetism around it. Second, whenever a magnetic field changes (by moving or by changing strength) a voltage is made. Voltage is the measure of the electric force or "pressure" that "pushes" electrons around a circuit. (You may also want to read Chapter 7 on the Electrical transmission system in The Energy Story . If there's another wire close to an electric current that is changing strength, the current of electricity will also flow into that other wire as the magnetism changes. A transformer takes in electricity at a highe...

Full article: http://www.energyquest.ca.gov/how_it_works/transformer.html

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