Question: The switch in Figure P21.42 is open for a very long time and then closed at t = 0. (a) What is the current through

The switch in Figure P21.42 is open for a very long time and then closed at t = 0.
(a) What is the current through R₁ and through R₂ immediately after the switch is closed?
(b) What is the voltage across the inductor immediately after the switch is closed?
(c) After the switch is closed for a very long time, what are the current through R₁, the current through R₂, and the voltage across L?
(d) The switch is now opened at t t_open. What are the magnitude and direction of the current through R₁ immediately after t_open?
(e) What is the voltage across L just after t_open?

R2 = 500 N R1 L = 4.5 mH V = 3.0 V 800 Ω

R2 = 500 N R1 L = 4.5 mH V = 3.0 V 800

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At t 0 no current flows through the inductor so it acts like a broken wire On the other hand after a long time the current becomes steady and V L 0 so it acts like a straight wire Then when the switch ... View full answer

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