Secondary voltage and current?? 1. The problem statement, all variables and given/known data A load resistor is placed across the secondary terminals of a step-down transformer with a turn ratio of 4:1. If the primary voltage and current are 120V and 1A., What will be the secondary voltage and current? Assume 100% efficiency. 2. Relevant equations Ns/Np = Vs/Vp = Ip/Is 3. The attempt at a solution Ns should be 4,,right?? but If Ns = 4..then, I don't get the right answer... why is Np 4?? Np is primary isnt it?? The answers were 30v and 4A.