Time constant of a circuit is the time in seconds taken after the application of voltage to each?

Time constant of a circuit is the time in seconds taken after the appl

1.	Time constant of a circuit is the time in seconds taken after the application of voltage to each?
A.	25% of maximum value
B.	50% of maximum value
C.	63% of maximum value
D.	90% of the maximum value
Answer» D. 90% of the maximum value