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Amperage the same in Series Circuits?

  1. Dec 3, 2015 #1
    If current is always the same in a series circuit then how is a transformer able to make the current smaller when it increases the voltage? is this just an exception since with the voltage being higher the same amount of power is being provided?
  2. jcsd
  3. Dec 3, 2015 #2


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    Staff: Mentor

    Welcome to the PF.

    What reading have you been doing about how transformers work? Can you post links to your research so far, and ask specific questions about your reading? The concepts of flux coupling and turns ratio are key to answering your own question... :smile:
  4. Dec 4, 2015 #3
    A transformer is not a series circuit. The primary loop isn't connected at all with the secondary loop. All the current that goes into the primary loop comes out of the primary loop again, and the same goes for the secondary loop.Electric charge is conserved, even if the currents in the primary and secondary loops are different.
  5. Dec 4, 2015 #4


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    Homework Helper
    Gold Member

    In a transformer, primary and secondary are 'magnetically' coupled. So, its not a series electrical circuit. Lenz's law will help you understand the basic working principle of the transformer. Power flow mechanism from primary to secondary will give you an explanation for stepping up and stepping down of the voltages and currents.
  6. Dec 4, 2015 #5
    That makes more sense thank you very much
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