1351. The times constant of a circuit containing capacitance C and resistance R is?
- A. 1/RC
- B. None
- C. R/C
- D. RC
Check answer and explanation
Answer: RC
Explanation In RC (resistive & capacitive) circuits, time constant is the time in seconds required to charge a capacitor to 63.2% of the applied voltage. This period is referred to as one time constant. After two time constants, the capacitor will be charged to 86.5 % of the applied voltage.