The coils having self-inductance of 10 mH and 15 mH have an effective – McqOptions

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1.	The coils having self-inductance of 10 mH and 15 mH have an effective inductance of 40 mH, when connected in series aiding. What will be the equivalent inductance if we connect them in series-opposing?
A.	20 mH
B.	10 mH
C.	5 mH
D.	Zero
Answer» C. 5 mH

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