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Question: problem 120 points consider the rc circuit in figure 1...

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Problem 1:(20 points) Consider the RC circuit in Figure 1. You may assume that the switch has been closed long enough for the voltages and currents to reach steady-state values. At time t 0 the switch is opened 1-0 V(0) Rs RA RB Figure 1: The switch in the RC circuit is opened at time t 0 1. (6 points) Find the voltage v(0-and the current i(0_) just before the switch is opened 2. (6 points) Find the voltage v(0+) and the current i(0+) immediately after the switch is opened. 3. (2 points) Find the voltage v(oo) and the current i(oo) after the switch has been opened for a very long time Justify your answer in one or two sentences. 4. (6 points) Find a differential equation that describes the response of the voltage v(t) for t 2 0.

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