Combination of Inductors, LR & LC Circuits question from MHT CET 2026 (18 Apr, Shift 2)

Answer: (c)

1. Let $P$ = junction after 1 H, $Q$ = junction after 3 H. The top wire joins $A$ to $Q$; the bottom wire joins $P$ to $B$.
2. So $Q \equiv A$, $P \equiv B$: 1 H ($A$–$P$), 2 H ($P$–top), 3 H ($P$–$Q$) and 4 H ($Q$–$B$) all lie between $A$ and $B$.
3. $\frac{1}{L} = 1 + \frac{1}{2} + \frac{1}{3} + \frac{1}{4} = \frac{25}{12}$
4. So the answer is (c) $\frac{12}{25}\text{ H}$.