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

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1.	The self inductances of two coils are 8 mH and 18 mH. If the co-efficients 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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