Hi everyone
I was solving problems about transformers. .when I have two circuit with a transformer I can solve problems easily. .
However. .some problems have three circuits (next to each other ) and transformer..and I am asked to find the current in every resistor in all circuit..how can I tackle this ..see Q2 in the link below

https://db.tt/mR0pxRu6

Thanks

 

Transform the 30Ω right hand (tertiary winding) load resistance to an equivalent value Rx in the center (secondary) loop. Add the transformed value to the 20Ω in the loop to give an effective secondary load of Rx + 20 ohms. Proceed from there to find the primary and secondary currents (as in a typical two winding case) and then use the ampere-turns balance between secondary and tertiary to determine the tertiary current.