How long is it until current reaches its steady value

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1. The switch of given Figure is closed at t = 0 s. How long is it until current reaches its steady value?

1422_Current.jpg

2. An unknown circuit containing dc sources and resistors has an open-circuit voltage of 45 volts. When its output terminals are shorted, the short-circuit current is 0.15 A. A switch, resistor, and inductance are connected in given Figure. Determine the inductor current and voltage 2.5 ms after the switch is closed.

778_Current 2.jpg

Reference no: EM13857051

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