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In the circuit shown in figure given below, switch SW1 is initially CLOSED and SW2 is OPEN. The inductor L carries a current of 10 A and the capacitor is charged to 10 V with polarities as indicated. SW2 is initially CLOSED at t = 0 – and SW1 is OPENED at t = 0. The current through C and the voltage across L at t = 0 + is
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- 55 A, 4.5 V
- 5.5 A, 45 V
- 45 A, 5.5 V
- 4.5 A, 5.5 V
Correct Option: D
The circuit at t = 0 + is drawn as,
Using KCL at mode P,
| - 10 + | = 0 | |||
| 10 | 10 |
⇒ Vp = 55 volts.
| and Ic = | = | = 4.5 Amps | ||
| 10 | 10 |
