2: Power in simple AC circuits Consider the three simple circuits from problem 1 again: E R E A. In which circuit(s) will power be dissipated as heat? In which circuit(s) will energy be stored? hear resistors Stores; capacitors B. Now consider the power supply. Given your answer above, in which circuit(s) does the power supply any net power? resistor = E C. For the resistor circuit, the resistance is R = 250 2 and Vrms = 40 V. 1. What is the Irms in this circuit? Irms = Vrms R 2. What is the average power delivered by the power supply? 410 250 0.16 Problem 3: Transformers Power lines typically have a very high rms voltage of 765 kV. A transformer needs to reduce th to 240 V. The primary winding (connected to the high-voltage input) has an unknown number c turns N. The secondary winding (connected to the low-voltage output) has N = 89 turns. A. What must N be? B. The power delivered by the primary winding (ipvp) must be the same as the power absorbed by the secondary winding (isvs). As a re