11. Calculate the RC time constant, t of a circuit having a resistance of 15 MQ and 3 010 AF. A. 48 530 s B. 47 280 s C. 46 410 s D. 45 150 s 12. An RC circuit have a 9 V source and lies at a 54-seconds of time constant. Then, find the voltage across the Capacitor after 153.6 seconds of charging. A. 9.636 V B. 8.477 V C. 7.258 V D. 6.899 V