Afghan Farmers: Opium Is The Only Way To Make A Living. Afghan Farmers: Opium Is The Only Way To Make A Living. An Afghan farmer collects raw opium as he works in a poppy field in Nangarhar province on April 29. Poppy cultivation reached a record high this year despite Western efforts to reduce it. An Afghan farmer collects raw opium as he works in a poppy field in Nangarhar province on April 29.
Best Answer: 1. voltage on a cap, charging v = vâ[1âe^(ât/Ï)] vâ is the final voltage 2. voltage on a cap, discharging v = vâe^(ât/Ï) vâ is the initial voltage on the cap R is resistance in ohms, C is capacitance in farads t is time in seconds RC = Ï = time constant v = vâe^(ât/Ï) v/vâ = e^(âÏ/Ï) = 1/e = 0.368.
e. What are the charge and current as functions of time? f. How much energy is stored in the capacitor when it is fully charged? a. The energy stored in this system is given fromU = 1 2 CâV 2 so that the potential difference is âV = 2U C = 23()00 J 30 Ã10â6 CV = 4.47 Ã103 V b. The time constant is given asÏ=RC =47Ã103Î©Ã32Ã10â6 F =1.5s. c. The maximum charge on the capacitor is the product of the capacitance and the