The time constant of an R-C circuit is defined as the time during which capacitor charging voltage actually rises to _________ percent of its value
Correct answer: C. 62, final
- A. 37, initial
- B. 62, initial
- C. 62, final
- D. 37, final
Explanation
After one time constant, a charging capacitor reaches 1 - e^-1, or about 63.2%, of its final voltage. The 37% figure refers to the remaining voltage difference, not the capacitor voltage itself.
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