Inductors and Inductance – 20

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20. A switch, a 220 Ω resistor, and a 60 mH inductor are in series across a 20 V battery. What is the current through the inductor two time constants after the switch is closed?

(a) 91 mA
(b) 78 mA
(c) 57 mA
(d) 400 mA

Answer
Answer : (b)
Explanation
Explanation : No answer description available for this question. Let us discuss.
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