Determine the self inductance of each coil and the coefficient of coupling

Determine the self inductance of each coil and the coefficient of coupling




Two identical coils with terminals T1T2 and T3 T4 respectively are placed side by side. The inductances measured under different sets of connections are as follows:



            When T2 is connected to T2 and inductance measured between T1 and T4 is 4 H.



            When T2 is connected to T4 and inductance measured between T1 and T2 is 0.8 H.



Determine the self inductance of each coil and the coefficient of coupling.





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