full$-$wave bridge$-$rectifier circuit with a $500-9$ load operates from a $120-$V $($rms$)60-$Hz household supply through a $6-$to$-1$ step$-$down transformer having a single secondary winding. It uses four diodes, each of which can be modeled to have a $0\mathrm{.}7-$V drop for any current. What is the peak value of the rectified voltage across the load? For what fraction of a cycle does each diode conduct? What is the average voltage across the load? What is the average current through the load?