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Consider the Circuit Shown in the Figure

Question 17

Short Answer

Consider the circuit shown in the figure. The battery has emf ε = 25 volts and negligible internal resistance. The inductance is L = 0.80 H and the resistances are R1 = 12 Ω and R2 = 9.0 Ω. Initially the switch S is open and no currents flow. Then the switch is closed. Consider the circuit shown in the figure. The battery has emf ε = 25 volts and negligible internal resistance. The inductance is L = 0.80 H and the resistances are R<sub>1</sub> = 12 Ω and R<sub>2</sub> = 9.0 Ω. Initially the switch S is open and no currents flow. Then the switch is closed. (a) What is the current in the resistor R<sub>1</sub> just after the switch is closed? (b) After leaving the switch closed for a very long time, it is opened again. Just after it is opened, what is the current in R<sub>1</sub>?
(a) What is the current in the resistor R1 just after the switch is closed?
(b) After leaving the switch closed for a very long time, it is opened again. Just after it is opened, what is the current in R1?

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(a) 2.1 A ...

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