A RL 30R = Ω 1 40 Cω = Ω u 100V 8 2 cos100 ASi t= 819 1 4 A . 216W B . 180W C . 144W D . 72W 6A 1Ω 1Ω 1Ω 1Ω 12V− + 1.1 A . 0.75W B . 2W C . 3W D . 8W 1.2 A . 141.4V B . 100V C . 70.7V D . 20V Vu + − R R C C 0.01F 0.04F 0.01H 0.25Ω Si 1.3 1.4 A . 64W B . 16W C . 8W D . 2W 6V + 1Ω 2Ω 2V +1A LR