Two coils of self inductance L1 and L2 are connected in series combination having mutual inductance of the coils as M. The equivalent self inductance of the combination will be :

Question

Two coils of self inductance L₁ and L₂ are connected in series combination having mutual inductance of the coils as M. The equivalent self inductance of the combination will be :

${1 \over {{L_1}}} + {1 \over {{L_2}}} + {1 \over M}$

${L_1} + {L_2} + M$

${L_1} + {L_2} + 2M$

${L_1} + {L_2} - 2M$

Solution

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