Engineering Board Exam Reviewer · Time Response of Reactive Circuits · medium
The curve shows the capacitor voltage after a switch connects an uncharged capacitor in series with a 2 k resistor to a dc source. The labeled point is 63.2% of the final value. Find the capacitance.
- 2, F
- 1, F
- 0.5, F
- 1.5, F
Answer
B. 1, F
Solution
The time constant is the time at which vC reaches 63.2% of its final value. The plot gives =2 ms. C= /R= 2 ms2 k =1, F.
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