-
A circuit consisting of a 1Ω resistor and a 2 F capacitor in series is excited from a voltage source with the voltage expressed as 3e – 4, as shown in the given figure. If i(0– ) and Vc (0– ) both are zero, then values of i(0+) and i(∞) will be respectively
-
- 3 A and 1.5 A
- 1.5 A and zero
- 3 A and zero
- 1.5 A and 3A
Correct Option: C
| I(s) |  | R + |  | = | ||
| Cs | s + 1 |
| ⇒ I(s) = | = | |||
| (s + 1)(RCs + 1) | (s + 1)(2s + 1) |
| Then , i(t) = Z-1 I(s) = Z-1 | ||
| (s + 1){s + (1 / 2)} |
i (t) = 6e– t – 3e– t / 2
∴ i (∞) = 3A, I(0) = 0
