Q48. An electric circuit is given below: S R C R The capacitor is initially uncharged. If the switch S is closed at time t=0. The voltage across the eapacitor as a function of time for t 0 1s given by 3 (a) Vo 1-exp 3 b)1exPRC RC 1-exp 3t (d) 3 1exp ()2 RC 2RC