1) A transformer is designed to change 120 V into 10,000 V, and there are 5,000 turns in the primary. How many turns are in the secondary, assuming 100 perfect efficiency? 2) A transformer has 420 turns in the primary and 120 in the secondary. What kind of transformer is this and, assuming 100 percent efficiency, by what factor does it change the voltage? By what factor does it change the current?