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Q.

Fig. shows a circuit that contains four identical resistors with resistance $R = 2.0 Ω$ , two identical inductors with inductance L = 2.0 mH and an ideal battery with emf E = 9 V. The current ‘i’ just after the switch ‘S’ is closed will be:

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a

3.0 A

b

9 A

c

2.25 A

d

3.37 A

answer is D.

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Detailed Solution

Inductor will behave as infinite resistance at t = 0 and will not allow current to pass through them.

$i = \frac{ε}{2 R} = \frac{9}{2 (2)} = 2.25 A$

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Fig. shows a circuit that contains four identical resistors with resistance R=2.0Ω, two identical inductors with inductance L = 2.0 mH and an ideal battery with emf E = 9 V. The current ‘i’ just after the switch ‘S’ is closed will be: