The self inductances of two coils are 8 mH and 18 mH. If the coeffici – McqOptions

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1.	The self inductances of two coils are 8 mH and 18 mH. If the coefficient of coupling is 0.5, the mutual inductance of the coils is
A.	4 mH
B.	5 mH
C.	6 mH
D.	12 mH
Answer» D. 12 mH

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