Engineering Board Exam Reviewer · Time Response of Reactive Circuits · medium
In an RC charging circuit, the current at t=3 is what percentage of the initial current?
- 63.2%
- 4.98%
- 36.8%
- 95%
Answer
B. 4.98%
Solution
i=I0e-t/ , so at t=3 , i/I0=e-3=0.0498, which is about 5%.
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