How Everything Works
How Everything Works How Everything Works
 

QUESTIONS AND ANSWERS
 
Question 253

What makes alternating current alternate?
The pump for alternating current (usually an electrical generator) creates electric fields that reverse their directions 120 times a second (60 full cycles of reversal, over and back, each second). This reversal pushes the current backward and forward through the wires connecting to this power source. The currents direction of flow alternates and so does its voltage.
         

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