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Direction of AC current through AC mains

  1. May 30, 2012 #1
    What would be the direction of the current from the mains till it completes its one full path and the appliance used in the circuit starts working?

    See attached image.

    Attached Files:

  2. jcsd
  3. May 30, 2012 #2
    That would change 50 times per second.
  4. May 31, 2012 #3
    in how many seconds does the current flows throughout the complete loop once and does it change directions within that period ?
  5. May 31, 2012 #4


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    Gold Member

    Kartik, mrspeedybob gave you the correct answer: the current in the loop changes direction fifty times during each one second.
  6. May 31, 2012 #5
    I think you are confusing electron flow with current flow. This may help - http://amasci.com/miscon/speed.html

    so, current starts flowing right away.. and how many times it changes direction depends on the frequency. 50Hz would give you the answer where the current will change direction 50 times in a second. In the US however, it is going to be 60Hz.

    this applet may help you visualize it better -

    http://www.falstad.com/circuit/#$+1...w+448+272+448+304+0 o+1+64+0+35+5.0+0.1+0+-1
    Last edited: May 31, 2012
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