3. Continue our example of power transmission to OSU from Foster Dam. The dam generates 20 MW of power at a voltage of 8000V and current of 2500 A. The current is sent to a step up transformer before transmitting the electricity to OSU. The power lines to and from OSU have a total resistance of 2.289. [ 13 points ] a. What output voltage from a transformer is necessary to achieve 99.9% power transmission efficiency? b. How are the number of primary and secondary coils related for this transformer? [3 pts]