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

Q. 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.

1. 37, initial
2. 62, initial
3. 62, final
4. 37, final

Answer: 62, final