题目
ENGR-217:201,202,203,204,501,502,505,506,515,516,521,522,523,524,525,526,535,536,PHYS-217:203,204,501,502,503,531,532,533 pre-class_test_wk_12_Inductance; RL, LC, and RLC Circuits
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Refer to the shown circuit diagram. At first at t < 0: With switch S2 kept open, switch S1 is closed and kept closed for sufficiently long time until the current through the circuit has reached its constant value. Then at time instant t = 0: Switch S1 is opened and switch S2 is closed simultaneously. From the following statements, select all that are true.
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标准答案
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思路分析
Let’s dissect the circuit behavior step by step for the two phases: t < 0 (steady state with S2 open, S1 closed) and t = 0 followed by t > 0 (S1 opened, S2 closed).
Option A: After sufficiently long time (t >> 0), when the current through the circuit has reached its constant value, the power delivered to the resistor is zero.
- When t >> 0 after switching, the inductor current decays to zero and there is no supply connected to the R-L loop (the source is d......Login to view full explanation登录即可查看完整答案
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