Two inductors,each of inductance $L$,are connected in parallel. One more inductor of value $5 \text{ mH}$ is connected in series with this configuration,and the effective inductance is $15 \text{ mH}$. The value of $L$ is . . . . . . $\text{mH}$.

  • A
    $10$
  • B
    $5.0$
  • C
    $2.5$
  • D
    $20$

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The equivalent inductance between $A$ and $B$ is equal to

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